# Free Image Resizer Online > Free Image Resizer Tool to resize images online fast. Change image dimensions, scale photos, and optimise files without quality loss. - **URL**: https://templated.io/tools/image-resizer/ --- Resize images to exact dimensions or by percentage. 100% free, runs entirely in your browser. Your image is processed 100% in your browser. Nothing is uploaded to any server. ## How to Resize Images Online 1. Upload your image (PNG, JPG, or WebP). 2. Choose a resize method: exact pixels, percentage, or presets. 3. Optionally lock the aspect ratio to avoid distortion. 4. Click "Resize Image" and download the result. ### Common Image Sizes | Platform | Dimensions | Aspect Ratio | | - | - | - | | Instagram Post | 1080 x 1080 | 1:1 | | Instagram Story | 1080 x 1920 | 9:16 | | Facebook / OG Image | 1200 x 630 | 1.91:1 | | Twitter Post | 1200 x 675 | 16:9 | | LinkedIn Post | 1200 x 627 | 1.91:1 | | YouTube Thumbnail | 1280 x 720 | 16:9 | | Full HD | 1920 x 1080 | 16:9 | | 4K UHD | 3840 x 2160 | 16:9 | Need to Generate Images Automatically? Templated lets you generate images from templates via API — perfect for social media, marketing, and e-commerce. Easy-to-use API Our [Image Automation API](https://templated.io/image-automation-api/) lets you automate image creation from templates at scale. No-code Integrations Integrate with popular no-code platforms like [Zapier](https://templated.io/blog/how-to-generate-images-from-google-sheets-with-zapier/), [Make](https://templated.io/blog/how-to-generate-images-from-google-sheets-with-make/) and Bubble. Customizable Templates Create and customize from our 100+ [templates gallery](https://templated.io/templates/) to match your brand and specific needs. ## Integrations Seamlessly integrate with your favorite tools Zapier, Make, Bubble, n8n, Airtable, Activepieces What our customers say People love how great our product works and how we're always there to help [Rated 4.7](https://www.trustpilot.com/review/templated.io) > "Business pressures now demand almost a 24x7 operation. The difference between choosing one SaaS product or another isn't just down to the technical capabilities of each, but down to their responsiveness when it doesn't quite work. In this case, an issue blocked us from being able to use the platform as intended. Within minutes of using the live chat, the issue was not only reproduced but correctly identified. Within the hour, the hot fix had been coded, tested and applied - unblocking the bottleneck and allowing us to carry on working. This is exceptional and the reason why I can't recommend this company enough - I'm so impressed and very grateful for their hard work. Keep it up!" > > Jason (March 12, 2026) > "This is a clever idea, especially in concert with programmatic (AI-generated) SEO." > > Ryan Hoover, Creator of ProductHunt (17 January 2024) > "We were looking for tools to help our users create and edit images with templates. We tried options like Canva, but Templated.io turned out to be the perfect choice for our product. It offers an easy API to render images, and its embed editor lets us provide our users with a full editing experience without having to create complex frontend components. It's a really great tool!" > > Harish (September 16, 2025) > "We integrate Templated.io into our portal for custom flyer generation. The editor is amazing, and the Canva import tool is exactly what we were looking for. Massive shoutout to Pedro for the technical support. He responds incredibly fast and fixes issues in no time. Highly recommended!" > > Yuan Zhuang (June 9, 2026) > "Brilliant piece of software. Reasonably priced (vs Canva's outrageously expensive API), and despite a few intricacies with the editor, a really fully-featured document generation API. Really great support too from Pedro, the founder!" > > Jacob Burns (August 17, 2025) > "Very reliable platform. Almost no errors ever. Easy to setup templates and use the API. And AMAZING support!" > > Lawrence Perera (March 24, 2026) > "We booked the "Scale" package to use it as a "print product editor" and we are amazed by the features and the support! Pedro replies to every question and also implemented small hints to the API for better functions on our request. Absolutly great Software and Service!" > > Sven Rißmann, südheide.media (December 18, 2025) > "Templated.io is basically a an API-first graphics content designer which makes it super easy to programmatically create document and image assets. It has most basic features and it is robust and "just works". The Make.com app really makes it super simple to incorporate into automation workflows. What sets templated.io apart the most is Pedro and his super fast and service minded, solutions oriented responses." > > Siavash (May 26, 2025) > "Amazing API, perfect support and a lot of new features on a monthly basis." > > Kalina Staykova (November 26, 2025) > "Currently working through an implementation of Templated.io and the customer service has been spectacular!!! I get near immedate response and near immediate remedies. It's glorious. I wish other companies were like this!!! Strong recommendation!" > > Tracy C (July 17, 2026) > "The editor is easy to use, very similar to Canva and the API is simple enough to integrate on the backend." > > Halem Wenderson, Developer at Telvetto (20 February 2024) Image Resizer FAQs Common questions about resizing images ### Is this image resizer free? Yes, completely free with no limits. Your images are processed entirely in your browser — nothing is uploaded to any server. ### Will resizing reduce image quality? Downscaling (making smaller) generally preserves quality well. Upscaling (making larger) can cause blurriness since the browser must interpolate new pixels. For best results when upscaling, keep the increase under 200%. ### What does "lock aspect ratio" do? When locked, changing the width automatically adjusts the height (and vice versa) to maintain the original proportions. This prevents your image from appearing stretched or squished. ### What size should I use for social media? Instagram posts: 1080x1080. Instagram stories: 1080x1920. Facebook/OG images: 1200x630. Twitter: 1200x675. LinkedIn: 1200x627. YouTube thumbnails: 1280x720. Use our presets for quick access to these sizes. ### Are my images uploaded to a server? No. All processing happens 100% in your browser using the HTML5 Canvas API. Your images never leave your device. ### Can I resize to exact pixel dimensions? Yes. Use the "Pixels" mode to enter exact width and height values. You can lock the aspect ratio to maintain proportions, or unlock it to set any custom dimensions. ### What is the maximum image size? This tool accepts images up to 20MB and can resize to a maximum of 10000x10000 pixels. Since processing happens locally, very large images may take a moment. ### How do I resize for email? For email images, 600-800px width is recommended for maximum compatibility across email clients. Most email clients don't support images wider than 600px without scaling. Keep file size under 1MB for fast loading. ### Does resizing affect file size? Yes. Making an image smaller reduces file size (often significantly). Making it larger increases file size. The output format also matters — WebP produces smaller files than PNG or JPG at similar quality. ### What browsers support this tool? This tool works in all modern browsers including Chrome, Firefox, Safari, and Edge. It uses the HTML5 Canvas API which has universal browser support. Automate Your Image Generation Today We can help you with a simple API and no-code integrations [Try For Free](https://app.templated.io/signup) ### Related Free Tools Discover more free tools you might find useful. - ### [Website Screenshot](https://templated.io/tools/website-screenshot/) Capture full-page screenshots of any website. Enter a URL and download as PNG or JPG. - ### [HTML to Image Converter](https://templated.io/tools/convert-html-to-image/) Convert HTML code or files to high-quality PNG or JPG images. - ### [HTML to JPG Converter](https://templated.io/tools/convert-html-to-jpg/) Convert HTML code or files to high-quality JPG images. - ### [Image Format Converter](https://templated.io/tools/image-format-converter/) Convert images between PNG, JPG, and WebP formats instantly. - ### [Image DPI Checker](https://templated.io/tools/image-dpi-checker/) Check the DPI, resolution, and dimensions of your images. - ### [OG Image Preview](https://templated.io/tools/og-image-preview/) Preview how your URL appears on Facebook, Twitter/X, and LinkedIn. [View All Tools](https://templated.io/tools/)