Convert image formats online free. Change extensions instantly between JPG, PNG, WEBP, and GIF tags with zero loss in graphic compression.
JPG, PNG, WEBP, BMP, GIF — or drag & drop
Dudi Image Converter is a fast, 100% free, browser-based tool from Dudi PDF Editor that converts images between all major formats — JPG, PNG, WEBP, BMP and GIF — in seconds. Whether you need to convert a PNG with transparency to WEBP so your website loads faster, turn a heavy JPG photo into a compressed PNG for editing, convert a screenshot into WEBP for modern web use, or simply change a BMP into a standard JPG for email attachments, this tool does all of it without installing software, creating an account, verifying an email or paying any hidden fee. Unlike most online image converters, your image is never uploaded to a remote server. The entire conversion runs inside your browser using the well-known HTML5 Canvas API — your image is read from your device, drawn onto an in-memory canvas at full resolution with high-quality smoothing, and re-encoded to the target format on your own device. That means your personal photos, screenshots, design assets and confidential images never leave your computer or phone. There is no signup, no email required, no watermark added by us, no daily limit and no page-count restriction beyond your device's memory. The interface is built around a fast, informative workflow. As soon as you upload an image, Dudi Image Converter shows the file name, the pixel dimensions (width × height) and the file size, then displays a side-by-side preview of the original and the converted result. You can choose the target format — JPG for photographs (smallest size, no transparency), PNG for graphics and any image that needs transparency preserved, or WEBP for modern web use with excellent compression. You can also pick the output quality: 100% for maximum fidelity, 90% (recommended) for balanced quality and size, 70% for smaller files, and 50% for the smallest file size. When converting to JPG, transparent areas are automatically filled with white because JPG does not support transparency — the tool warns you about this behaviour by design so you never get a surprise. When converting to PNG or WEBP, transparency is fully preserved. After conversion, Dudi Image Converter shows the original and converted image side by side with their formats and file sizes, plus a clear message showing exactly how much the file size was reduced (or increased) — for example "File size reduced by 62% (2.4 MB → 920 KB)" — so you can immediately see the impact of your quality setting. The converted file is saved automatically through FileSaver.js, and the filename uses Dudi PDF Editor's counter so repeat conversions in the same browser session never overwrite each other. It becomes Dudi PDF Editor Image Converter.jpg or .png or .webp depending on your target format, and subsequent downloads in the same session become (2), (3) and so on. The tool accepts images up to 20 MB and works with JPG, PNG, WEBP, BMP and GIF inputs. Everything runs locally, so the tool often keeps working even on a weak connection after the first page load. The layout is fully responsive, so the upload area, format selector, quality dropdown, preview panes and action buttons all stay easy to use on a small Android phone as well as on a large desktop monitor. If you need more tools, Dudi PDF Editor also offers Image Compressor, Image Resizer, Background Remover, Image Upscaler, Image Crop, Grayscale Image, Passport Photo Maker, QR Code Generator, Password Generator, My IP Address, and the full PDF tool suite (PDF to Excel, Excel to PDF, PDF to Word, PDF to PowerPoint, PDF to Text, OCR, Word Maker, Word to PDF, JPG to PDF, Merge PDF, Split PDF, Compress PDF, Rotate PDF, PDF Page Numbers, Sign PDF, Protect PDF, Unlock PDF, Watermark PDF, Crop PDF, Extract Images) that all run locally in your browser with the same no-upload guarantee.