Online convert eps svg jobs

I'm seeking a seasoned SEO professional to enhance my website's visibility on local search engines. The main objective is to generate local leads that can potentially convert into customers. Key Responsibilities: - Optimize my website for local search on Google, Bing, and Yahoo. - Implement SEO strategies aimed at increasing website traffic and generating local leads. - Work with a predefined set of specific keywords to improve search rankings. Ideal Skills: - Proven experience in local SEO. - Proficiency in keyword optimization and search engine algorithms. - Excellent understanding of Google, Bing, and Yahoo's local search features. Please provide examples of your previous work in local SEO and the results achieved.

I need an experienced professional to convert nine secure PDF files into high quality Google Slides. These PDFs contain multimedia elements links, so the conversion needs to maintain the integrity of the original content. Key requirements: - Implementation of interactive features: The converted slides need to be interactive, including clickable links, embedded videos, and interactive forms from the source file pdf Ideal skills for this job include: - Proficiency in Google Slides and PDF conversion - Experience with multimedia content - Graphic design skills, particularly with custom templates - Knowledge of implementing interactive features in Google Slides. Due to the nature of this project, attention to detail and a strong understanding of multimedia content is essential. Ple...

I'm looking for a skilled developer to convert my Figma designs into HTML pages for a React project. The pages need to be responsive, catering to desktop, tablet, and mobile views. You will only need to convert basic interactive elements like buttons, with the majority of the content being static. Key Requirements: - Proficient in React and HTML - Experience in Figma to HTML conversion - Ability to implement responsive design - Familiarity with Tailwind and Bootstrap for styling The ideal candidate will have a keen attention to detail, ensuring that the HTML accurately reflects the Figma designs, and can implement the required responsiveness without compromising the integrity of the design.

I'm seeking a skilled marketer to generate leads and sell my digital marketing course aimed at students. The ideal candidate should have experience in social media, email marketing an...The ideal candidate should have experience in social media, email marketing and search engine marketing. Key Responsibilities: - Identify and target potential students through various marketing channels - Create engaging content using blog posts, videos, and infographics to promote the course - Convert leads into sales effectively Ideal Skills: - Proven track record in digital marketing - Excellent content creation skills - Strong understanding of the student market Experience in selling online courses is a plus. I am looking for someone who can deliver measurable results and help mak...

...media outreach skills - SEO knowledge to optimize lead generation - Proven lead generation expertise - Effective LinkedIn outreach tactics - Proficient in knowledge regarding U.K. financial market (unsecured loan, asset finance) To Apply: Please provide your relevant experience and approach to lead generation in your application. We look forward to hearing from you! For every lead that we convert, we will give you £25 commission per lead I am trialling this for one week - if you consistently bring forward good quality leads, ongoing going work will be given for the next 12 months and the commission will increase to £50 per converted lead from 21st January 2025 onwards. If you are exceptional and consistently bring good quality lead, the commission increas...

...is results-driven with a passion for crafting high-performing campaigns. What We’re Looking For: • Expertise in Google & Facebook Ads with a proven track record of delivering ROI-focused campaigns. • Strategy & Optimization: You MUST know how to design, launch, and optimize campaigns to achieve maximum performance. • Creative Edge: You can write compelling ad copy and know what visuals convert. • Data-Driven Decision Making: You thrive on analytics and use data to guide your strategy. • Specialized Knowledge: Expertise in service-based businesses is a huge plus. What You’ll Do: • Plan and execute local ad campaigns across Google Ads, Facebook, and Instagram. • Conduct keyword research, audience targeting, and A...

Job Listing: Freelance Online Listing Agent We are seeking a detail-oriented and motivated freelance Listing Agent to assist in creating, managing, and optimizing online postings for our business. If you have a knack for crafting compelling ads, staying organized, and ensuring accuracy, we’d love to work with you! Responsibilities: Create and post accurate and engaging listings across various online platforms (e.g., marketplaces, classified sites, social media). Research target audiences and keywords to ensure maximum visibility and reach. Regularly monitor and update listings to keep them relevant and up-to-date. Respond promptly to inquiries from interested parties, ensuring excellent communication. Track and report on the performance of listings, offering i...

I'm looking for an experienced Server Administrator with a strong background in Linux, particularly ...Install and configure ejabberd for real-time messaging. - Implement MiroTalk SFU for WebRTC-based video conferencing. - Set up the Global Multi School Management System Express for managing the online school. The ideal candidate will have: - Extensive experience with Linux server administration. - Proven skills in installing and configuring ejabberd, MiroTalk SFU and school management systems. - Excellent problem-solving skills for ensuring smooth server performance. - Capability to deliver a fully operational server for an online school. Your expertise will be key to creating an efficient and effective online learning environment. Please bid if you have the re...

...toy brand's text logo by adding a captivating background. The font for the logo is already selected, but we want an eye-catching design that embodies the playful and vibrant essence of a toy brand. Requirements: - Utilize the provided font for the text logo. - Create a unique and colorful background that complements the toy brand's theme. - Deliver a high-resolution vector file (AI, EPS, or SVG) and other formats (PNG, JPG). Ideal Candidate: - Experienced in logo design and branding for toy or children-oriented brands. - Proficient in Adobe Illustrator, Photoshop, or equivalent design tools. - Creative thinker with a portfolio showcasing vibrant, fun, and playful designs. If you can bring our vision to life, please send your proposal along wi...

I need an experienced developer to convert my corporate website into a WordPress theme. The project entails: - Keeping the existing design intact without any major redesigns or tweaks. - Migrating all current website pages over to WordPress Ideal Skills: - Proficient in WordPress development - Strong understanding of corporate web design - Experience with theme creation and content migration - Attention to detail to maintain design integrity I look forward to seeing your proposals.

...e-signature and deposit payment options. 3. Post-Job Follow-Up • Automate thank-you emails, review requests, and small incentives for feedback. • Provide simple guides or tips for maintaining refinished ceilings. 4. Marketing Integration (Optional Based on Budget) • Basic Google Ads and Facebook Ads setup for local homeowner targeting. • Simple retargeting campaigns for visitors who didn’t convert. What We’re Looking For in a Freelancer: • Experience in service-based business websites with strong UX/UI skills. • Proficiency in CRM setup and marketing automation (email/SMS). • Familiarity with Google Ads and Facebook Ads for local targeting (bonus). • Ability to create clear documentation (SOPs) for handoff to our team...

...storage zones. Layer 6: Aircraft Movement Insights Show detailed aircraft movement patterns on runways, taxiways, and aprons. Highlight key operational bottlenecks and parking positions. 3. 3D Model Creation Software for Initial 3D Creation: Use tools like Blender, SketchUp, or AutoCAD to create a base 3D airfield model. Layer Visualization: Export the model into Illustrator-compatible formats (e.g., .SVG) with layered details. 4. Adobe Illustrator Workflow Import 3D model layers into Illustrator and refine them for clarity and aesthetics. Use gradients, shading, and perspective lines to enhance the 3D effect. Apply vibrant and distinct color schemes for each layer while ensuring visual consistency. Add legends, labels, and icons for easy understanding. 5. Visual Appeal and Usabi...

I'm seeking a finance professional to assist with migrating and categorizing various sources of financial data into QuickBooks Online. Key Responsibilities: - Migrate financial data from credit card statements, bank statements, receipts, and any other expense documents. - Accurately categorize expenses and ensure proper account mapping. - Review and reconcile transactions for the specified period (2021-2024). - Ensure compliance with Canadian tax laws and provide insights where necessary. Ideal Skills: - Proficient in QuickBooks Online - Strong understanding of Canadian tax laws - Excellent data analysis and categorization skills - Experience with financial reconciliation Your attention to detail and expertise in financial software will be crucial for this project.

I'm in need of a professional and creative logo for my company, ARW Group. We specialize in facility management, consulting, and construction management. The logo should embody both our industry and our commitment to quality and creativity. Logo Requirements: - Must be delivered in Adobe Illustrator (.ai), Scalable Vector Graphic (.svg), and Portable Network Graphic (.png) formats. - Should be suitable for both desktop and mobile versions. - Must include both colored and black-and-white variations. - Final design should reflect professionalism and creativity, aligned with the construction industry. Creativity is key, so I'm open to all styles. I encourage you to think outside the box and deliver a logo that truly represents our brand. I look forward to seeing your design...

I'm looking for a skilled app developer to create an e-commerce application for my retail liquor shop. it have to serve 50-100 orders per day. 3 pages - home page , catalogue page , my account page , no need for delivery tracking feature Key Features: - Primarily focuses on seamless order placement - Supports both user accounts and guest checkout options Payment System: - Incorporate Credit/Debit cards and UPI as payment methods Ideal Skills: - E-commerce app development experience - Strong knowledge in secure payment integration - Proficiency in creating user-friendly interfaces Experience with retail and liquor industry apps is a plus.

I'm looking for an experienced programmer to convert 3 custom Pine Script indicators into Easy Language. The primary focus of these indicators is plotting line graphs. Key Requirements: - Proficient in both Pine Script and Easy Language - Experience with programming custom indicators - Able to accurately translate the logic and functionality of the Pine Script indicators into Easy Language - Capable of implementing line graph plotting in the Easy Language version The project involves taking my custom Pine Script indicators, which are currently designed to plot line graphs, and converting them into equivalent Easy Language indicators. Please reach out if you have the relevant skills and experience.

...Bytecode**: Familiarity with Python’s bytecode, the Python compiler, and how Python code is executed at the bytecode level. - **Compilers**: Strong understanding of compiler design, particularly in the context of generating intermediate representations (IR) and handling different programming constructs. - **Transpilation**: Experience building or improving transpilers (specifically those that convert Python code into lower-level representations like LLVM IR). - **Debugging**: Ability to debug complex, low-level code and deal with hard-to-find issues in transpilation and bytecode generation. - **Version Control**: Experience using Git for version control in collaborative environments. **Deliverables:** - Fixed and enhanced handlers for Python bytecode operations. - A transp...

I need my logo converted into several different file formats for various uses. The logo needs to be in a new file format suitable for a different purpose. It should be saved as: - PNG - SVG - PDF - Ai - jpg - eps - PNG with transparent background - JPEG - EPS - Ai The ideal freelancer for this task should have experience in graphic design and file format conversions. They should also be able to ensure that the logo retains its quality and integrity across all formats.

I have a confidential order flow strategy that I need converted into a script for GoChart to trigger alerts based on specific conditions. Although the spec...converted into a script for GoChart to trigger alerts based on specific conditions. Although the specific conditions for the alerts have not yet been defined, I am open to suggestions based on the capabilities of GoChart and the nature of my strategy. Ideal Skills: - Experience with GoChart - Proficient in scripting for trading platforms - Understanding of order flow strategies - Ability to convert complex strategies into simple scripts - Good communication skills for discussing potential alert conditions Please note that the details of the order flow strategy are confidential and will be disclosed only after the project i...

I'm looking for a professional web developer to create an interactive online MCQ test site. The site will be for my clients, which primarily includes students, educators, and administrators. Key features of the site should include: - A private log-in system: Clients will be able to register with their email to access the site. - Test-taking capability: After logging in, clients should be able to take the MCQ tests. The ideal candidate for this project should have a strong background in web development, experience with creating interactive online testing platforms, and a solid understanding of user account management systems. Skills in UX/UI design would also be beneficial in order to make the site user-friendly. Please ensure to include relevant portfolio pieces in...

!!! NO AI IMAGES WANTED !!! We want to create a striking typography design for our T-shirts based on the following words: POWERFULL WONDERFULL PERFECT Specific Requirements: The letters "RF" must be prominently highlighted in all three words (e.g., using a different color, size, or font styl...WANTED !!! We want to create a striking typography design for our T-shirts based on the following words: POWERFULL WONDERFULL PERFECT Specific Requirements: The letters "RF" must be prominently highlighted in all three words (e.g., using a different color, size, or font style). T-shirt base color: Black. Text color: White. "RF" highlight: Red. Deliverables: - Name of the font used. - File in EPS or Illustrator format. We look forward to seeing creative desig...

I'm looking for a Python expert who can help me create an automated trading system that interacts with the National Stock Exchange (NSE) in India. The system should be capable of fetching live data from the Official exchange API and trading stocks. Key tasks ...indicators Ideal skills and experience for the job include: - Proficiency in Python with a strong understanding of its application in finance and trading - Experience with the NSE and understanding of its trading rules and regulations - Familiarity with the Official exchange API and ability to work with it to fetch live data - Previous experience in developing automated trading systems - Ability to convert HTML code based indicators into Python code - Understanding of stock trading and ability to develop strategies for...

I have a medium-sized Java project (5,000 - 15,000 lines of code) that I need to convert to Golang. This project is a web-application using SOAP and some interfaces in REST without any graphical web this is full gateway witch received, process and send msg to other side, Key Requirements: - Ensure all functionalities are preserved Ideal Skills: - Proficiency in both Java and Golang - Experience in converting Java projects to Golang - Knowledge of command-line tools development - Familiarity with Hibernate and equivalent Golang libraries

As per requirement provided in PMB

I'm looking for a skilled designer to create a simple and minimalist, traditional style cake topper for the Year of the Snake, 2025. Key requirements: - The design should be suitable for a single colour Glitter card, and in a format compatible with Cricut machines (Svg file). - The cake topper should incorporate a simple snake illustration, and the year '2025'.

I'm looking for a skilled web developer who can convert my 5 PSD pages into responsive HTML for a portfolio website. Key requirements include: - Ensuring the site is fully responsive and looks great on mobile and tablet devices. - Implementing specific interactive elements such as hover effects, sliders/carousels, and form validations. Ideal candidates should have a strong background in web development, with particular expertise in PSD to HTML conversions. Experience with creating responsive designs and implementing interactive elements is essential. Please provide examples of similar projects you've completed.

...multi-step email and WhatsApp campaign. The end goal of campaign is to generate qualified leads of business owners who need our B2B services. The plan is to warm up potential prospects with three well-crafted email messages. The engagement will be measured, and those who open or click on the emails will be subsequently targeted via WhatsApp with up to three follow-up messages. The ultimate goal is to convert these interactions into qualified leads. Ideal Candidate: - Proven experience in crafting high-engagement email and WhatsApp content - Friendly tone, yet professional and persuasive - Ability to incorporate promotional offers, informative content, and customer testimonials into the messages - High email and WhatsApp reply rates We are targeting B2B process automation and p...

I need a freelancer to convert a PDF file into a CAD drawing. The CAD drawing will be primarily used for architectural plans and should include certain specific elements. Key Requirements: - Convert provided PDF into a CAD drawing. - CAD drawing should be in DWG format. - Include structural elements in the CAD drawing. -INCLUDE ALL ARCHITECTURAL DETAILS & DIMENTIONS. *ATTACHED 2 PDF FILES ONE FILE INCLUDES ALL ARCHITECTURAL DETAILS THE SECOND FILE HAS THE DIMENTIONS Ideal Skills: - Proficiency in CAD software with experience in architectural design. - Ability to interpret and convert PDF documents into CAD. - Attention to detail to ensure all structural elements are accurately represented.

I need a freelancer to convert my CAD drawings into a 3D model. The primary software for the 3D model should be AutoCAD. Key Requirements: - Convert CAD drawings into a 3D model primarily in AutoCAD. - The 3D model is primarily for visualization purposes, so it doesn't have to be overly complex. - The level of detail needed is basic shapes and layout, without the need for intricate detailing or complex textures. Ideal Skills: - Proficiency in AutoCAD. - Experience in CAD to 3D model conversion. - Ability to create basic 3D models for visualization purposes.

My website has a SEO rating of 100 in Lighthouse, but is unable to rank in google. Google has crawled the site and it do appear in the google if i saerch with double quotes. So i need someone to guide me with it. It uses 14 Key Requirements: - Proven experience with SEO, particularly for service-oriented websites - Proficiency in , with a soli...with a solid understanding of its SEO requirements - Ability to effectively target and incorporate relevant keywords - Prior experience with e-commerce and rental services SEO is a plus Skills needed: - SEO proficiency - expertise - Keyword targeting - Airbnb type website SEO understanding The goal is to improve the site's search engine ranking, attract more visitors, and ultimately convert them into users of the service.

I'm looking for a skilled front-end developer who can convert my Figma design into responsive HTML and CSS files. The design needs to be responsive across Desktop, Tablet, and Mobile. Key Requirements: - Convert Figma design into HTML and CSS - Implement basic hover effects as per the design - Style the Subscription form according to the design Ideal Skills: - Proficiency in HTML and CSS - Experience with responsive web design - Familiarity with Figma - Basic understanding of CSS animations and transitions

I am looking for a freelancer who can assist me with data entry work. The task involves extracting text data from various online articles and websites, and compiling it into a plain text file. Ideal Skills and Experience: - Proficient in data entry with a keen eye for detail - Familiarity with navigating online articles and websites for data extraction - Able to deliver work in a plain text file format - Good understanding of maintaining the integrity and confidentiality of the data Please note, the main focus is on text data entry, so a strong command of English is a plus.

> "I need a professional logo design for my business. The logo should be modern, clean, and unique. It should represent the brand's values and work well across various media such as websites and social media. I have purchased a logo from Fiverr, but I need modifications to make it unique and tailored to my brand. Modifications may include changes in color scheme, font choice,...It should represent the brand's values and work well across various media such as websites and social media. I have purchased a logo from Fiverr, but I need modifications to make it unique and tailored to my brand. Modifications may include changes in color scheme, font choice, layout, or adding/removing elements. Please ensure the final design is of high quality and delivered in both vector (AI, ...

I'm looking for a comprehensive online casino software that includes slot games, card games, and roulette. The software needs to have the following features: - Game Types: Incorporate a variety of engaging slot games, strategic card games, and the classic roulette. - Payment System: The software must include a secure and efficient integration for cryptocurrency transactions. - Platform Compatibility: This software needs to be accessible and functional on web, mobile, and desktop platforms. Ideal skills for this job would include experience in casino software development, game design, and secure payment integration. Knowledge in cryptocurrency transactions is a must. I look forward to your proposals.

I have my own fully custom C++ audio DSP project that currently runs on a dedicated DSP platform (Sharc ADSP). I want to migrate/convert this project to a VSC project on Raspberry Pi5. The C++ source code is already in a „Rpi-portable” version, i.e. stripped of Sharc peripherals-specific code Hardware concept: • Use of two USB to I2S/SPDIF UAC2 converters like this: ((as input Converter1 and output Converter2) or (as output Converter2) • I2S pins of Converter 1 will be connected to RPi GPIO header

Hello, sports people! I am a logistics specialist and certified personal trainer for runners all levels around the world, with 30 years of work experience, recently focused in online assessments for microjob sites, writing translations from english to spanish, data entry for developers, and helping clients with health & nutrition issues, marketing research missions, and different tasks within e-commerce. As a professional personal trainer with some years of experience, I can help you with different tools and a customize planning adapted to you to reach your goals: - Running motivation - Lose weight - Race goals - Trail running - Ultra marathon - Gym routine - Fitness maintenance - Sports nutrition - New challenges - Other requests You can review my 5 star reviews in googl...

I have a React Next JS website template that I need converted into static HTML pages. The primary purpose of this conversion is to obtain HTML code. Following is the HTML template that we have purchased and we will send you the template in zip file once we decide to work together. Key Requirements: - The static HTML pages must maintain the current design and layout exactly as they are. - All functionality and interactivity from the original website must be preserved in the static HTML pages. Ideal Skills: - Proficiency in HTML, CSS, and JavaScript - Experience with React and Next JS - Ability to replicate designs accurately - Strong understanding of web interactivity and functionality

I am looking to develop and online magazine website which has the following functionality: 1. The website will offer users the option to subscribe to the magazine. The subscription has to be a recurring annual subscription method. 2. The magazine also has a printed copy. Users will also get a printed copy. The magazine has 11 Issues in a year. Each time a new issue is due to be released I will need to have a function on the website where I can access the list of all the susbcribers and their addresses so that I can print shipping labels for them. (the purchase of shipping labels will be done via a shipping company; I just require the names and addresses in excel style sheet [Name, Address]) 3. The website will have a page which will be a 'Subscribers Only' area. Meaning...

We need Japanese native speakers from Kyushu or Tohoku to record dialect sentences online at app with phone. workload: 750 sentences requirement: native accent and quiet background No need record again but need right rate over 95% get full payment, below the rate get proportional payment after this project you will get 5 stars and good comments

...Management o Manage customer/project data (name, location, timeline). o Link CRM data directly to configurator-generated offers. • PCS – Power Conversion System Management o Add/Edit/Delete PCS entries via a form-driven interface. o Trigger compatible/restricted options dynamically. • SLD – Single-Line Diagram Generation o Auto-generate SLDs based on user selections. o Export to DXF, PDF, PNG, SVG formats. • GA – General Arrangement Drawings o Phase 1B: Basic layout (major equipment only). o Phase 2: Advanced GA with mounting points, ventilation paths, and cable routing. • BOM – Bill of Materials o Generate BOM dynamically with real-time pricing adjustments. o Export to Excel (XLSX) and CSV. • Sales Configurator o D...

I am looking for a developer or a solution that can search the internet for information such as identity, profile etc of an individual and then prepare a report that can call out the possible risks or threats of such information being available on the public domain. The solution will also help to delete all publicly available information and personal details of an individual More details: Is this project for business or personal use? For starting a new enterprise What information should successful freelancers include in their application? Past work How soon do you need your project completed? Within a month

I need a professional translator to convert the text in my video into German. The video is of unspecified type, and I'm not sure if it contains any specific terminology that needs to be accurately translated. You don't need to worry about specific terms or jargon. The main task is to ensure the text is translated into German. Ideal skills and experience for the job: - Professional translation experience, preferably with video content - Native or near-native fluency in German - Excellent understanding of English - Strong attention to detail

I'm seeking a designer to convert my logo into two versions: one black and one white. Both adaptations should maintain the original's style, with slight adjustments necessary to ensure the design works in monochrome. Key Requirements: - Transforming the logo into black and white versions - Making minor design adjustments for visual consistency - Delivering the final logos in PNG format with a transparent background Ideal Skills: - Proficiency in graphic design software - Attention to detail - Experience with logo adaptation and refinement

... Core Project Requirements 1. Data Collection System Develop an automated scraping system for (Turkish Electronic Fund Trading Platform) Collect daily mutual fund performance data including: Fund prices Performance metrics Fund details Implement error handling and retry mechanisms Store historical data for trend analysis Ensure reliable daily updates 2. Analysis System Convert existing Excel formulas and calculations to web-based format Implement the following analysis features: Fund performance calculations Risk metrics Comparative analysis Historical performance tracking Custom ranking algorithms Generate automated performance reports 3. User Interface Clean, responsive dashboard design Interactive charts and graphs Sortable and filterable data ta...

I have an online store built on Laravel, and I am looking for a skilled Laravel developer to help me with some tasks. The specifics can be discussed further, but I am open to suggestions on what could be improved or added to the store. Ideal Skills: - Strong expertise in Laravel - E-commerce knowledge - Problem-solving skills Please provide your proposal and let's discuss how we can enhance the functionality of my online store.

I need a professional typist to convert my handwritten notes into Google Docs. The content consists of business reports. Ideal skills and experience for the job: - Proficient in typing and Google Docs - Attention to detail - Familiarity with business terminology - Ability to meet deadlines

PROJECT UPDATED ( No Longer require IOS Build ) I need an experienced developer to convert my existing Flutter/Dart code which already builds as an Android App into a secure Email/Password Authentication system for the web app, utilising either Firebase or AWS. Key Requirements: - Create a secure authentication system for the web app, using the Email/Password Authentication method. - No existing security protocols need integration. Simply follow industry best practices for security. Ideal Skills: - Proficiency in Flutter and Dart. - Familiarity with Firebase and AWS. - Strong understanding of security best practices in web authentication.

I need a professional graph...from the original design. The final deliverables should include both a long horizontal version of the logo for the website, and a square version for other uses. Key Requirements: - Logo centering - Edge smoothing - Color consistency (do not change the colours) - Creation of a long horizontal logo - Creation of a square logo - Dark background versions of both logos Deliverables: - Both PNG and SVG vector files - Versions of both logos for a dark background The ideal candidate for this project should have extensive experience in graphic design, particularly in logo creation and modification. Proficiency in using design software, particularly Adobe Illustrator, is crucial. Please ensure to maintain the exact colors and the overall concept of the origin...

I need a professional typist to convert my handwritten notes into Google Docs. The content consists of business reports. Ideal skills and experience for the job: - Proficient in typing and Google Docs - Attention to detail - Familiarity with business terminology - Ability to meet deadlines

I need a talented designer who can transform a photo into a Chibi-style cartoon emote. Key Requirements: - Convert a photo into Chibi-style cartoon emotes - Create 1-3 emotes, all expressing happiness - Deliver high-quality, expressive designs Ideal Skills and Experience: - Proficient in cartoon and emote design - Familiar with Chibi-style - Able to convey emotions through design - Experience with creating emotes from photos