Not every platform accepts every image format. Uploading a PNG to a site that only wants JPG, or sharing a WebP photo with someone whose older software cannot open it, is a frustratingly common problem. Rekreay's free Image Format Converter solves this instantly — convert any image between JPG, PNG, and WebP right inside your browser, with zero uploads, zero accounts, and zero cost. Your file never leaves your device, so your photos stay completely private.
The converter uses the HTML5 Canvas API, the same technology built into every modern browser, to decode your original image and re-encode it in whichever format you choose. JPG gives you the widest compatibility for photos. PNG preserves transparency for logos and screenshots. WebP delivers the smallest file sizes for use on websites. Whether you are a blogger optimising images for page speed, a designer preparing assets for a client, or simply someone who needs a quick format change, this tool gets the job done in seconds — no software to install, no file size limits, and no watermarks ever.
Free Image Format Converter
Convert JPG, PNG & WebP — 100% in your browser, no upload needed
Converted Preview
What Is This Image Format Converter?
The Rekreay Image Format Converter is a free, browser-based tool that lets you convert any image between JPG, PNG, and WebP formats in seconds — without uploading your file to any server. Everything runs locally inside your browser using the HTML5 Canvas API, so your images stay completely private from start to finish.
Different image formats serve different purposes. JPG (JPEG) is the most widely supported format and is ideal for photographs, but it uses lossy compression that discards some image data to reduce file size. PNG uses lossless compression that preserves every pixel perfectly, making it the best choice for graphics, logos, and screenshots with sharp edges or transparent backgrounds. WebP is a modern format developed by Google that delivers smaller file sizes than either JPG or PNG at comparable visual quality, making it the top choice for web performance.
Whether you need to convert a PNG logo to JPG for an email attachment, switch a photo to WebP for faster website loading, or preserve a JPG as a lossless PNG for editing, this tool handles all six conversion paths — JPG to PNG, JPG to WebP, PNG to JPG, PNG to WebP, WebP to JPG, and WebP to PNG — with no software to install and no account to create.
How to Convert an Image Format — Step by Step
-
1Upload your image. Click "Choose Image" or drag and drop a JPG, PNG, or WebP file onto the upload area. The image loads instantly inside your browser — nothing is sent to any server at any point. You will see the original file size appear in the stats bar immediately.
-
2Select your output format. Click the format you want to convert to — JPG, PNG, or WebP. The format flow diagram at the top of the card shows how all three formats relate to each other. You can convert in any direction: JPG to WebP, PNG to JPG, WebP to PNG, and so on.
-
3Adjust output quality (JPG and WebP only). Use the Quality slider to balance file size against image sharpness. A setting of 85–95% is ideal for most uses. For PNG, the quality slider is hidden because PNG is a lossless format — every PNG output is pixel-perfect regardless of settings.
-
4Click "Convert Image". The tool draws your image to an off-screen HTML5 canvas and re-encodes it in the format you selected. The stats bar updates to show the original size, the converted size, and whether the file grew or shrank. A preview of the converted image appears below the stats.
-
5Download your converted file. Click the Download button to save the result. The file is named automatically with the correct extension (for example, photo.png becomes photo-converted.jpg) so you can easily identify your converted files alongside the originals.
100% Private
Your image is never uploaded. All conversion runs locally in your browser using the Canvas API.
Instant Conversion
No waiting for uploads or server processing. Conversion happens in milliseconds on your own device.
All Three Formats
Convert freely between JPG, PNG, and WebP in any direction — six conversion paths in one tool.
No Watermarks, Ever
Completely free with no account required. Your converted image comes out clean every single time.
Frequently Asked Questions
Tips & Best Practices for Image Format Conversion
-
💡Always convert from the original source file. If you have a high-resolution original, convert from that rather than a previously compressed copy. Each round of lossy compression (JPG or WebP) discards more data, so working from the source keeps quality as high as possible.
-
💡Use WebP for all web-facing images. WebP typically produces files 25–50% smaller than JPG at the same visual quality. Smaller images mean faster page loads, lower bandwidth costs, and better Core Web Vitals scores — all of which improve your site's search engine ranking and user experience.
-
💡Use PNG for logos, icons, and transparent images. PNG is a lossless format, which means every pixel is preserved exactly. It is the only format here that supports full transparency (alpha channel), making it essential for logos with transparent backgrounds, UI icons, and screenshots of text or line art.
-
💡Use JPG when compatibility is the priority. If you are sending an image to someone using older software, uploading to a platform with limited format support, or sharing via email with users who may open files on legacy devices, JPG remains the safest choice due to its near-universal compatibility across all operating systems and applications.
-
💡Set quality to 85–92% for JPG and WebP. This range is the sweet spot for most photographs and design assets — it produces files that are noticeably smaller than a quality setting of 100% while remaining visually indistinguishable from the original under normal viewing conditions. Going above 92% gives diminishing returns; going below 80% risks visible artefacts in detailed areas.
-
💡Combine format conversion with compression. After converting your image format here, use the Image Compressor to fine-tune the file size further. Converting to WebP and then compressing at 80% quality can reduce an original JPG file to just 10–20% of its starting size with no visible quality loss — perfect for blog images and email attachments.