A free image converter that runs in your browser
Convert PNG, JPG, WebP, AVIF, HEIC and more without uploading anything. Your files stay on your device. No signup, no watermarks, no limits.
- Free
- Runs on your device
- No account
- No limits
Image tools
Crop and combine
Size and orientation
Colour and light
Borders and effects
Text and marks
Ready-made sizes
Pages that open with the setting already filled in, for the sizes people get asked for most.
PDF tools
- Convert images to a PDF
- Convert a PDF to images
- Merge PDF files
- Split a PDF
- Extract pages from a PDF
- Delete pages from a PDF
- Reorder PDF pages
- Rotate PDF pages
- Add a watermark to a PDF
- Add page numbers to a PDF
- Convert JPG to PDF
- Convert PNG to PDF
- Convert HEIC to PDF
- Convert a PDF to PNG images
- Extract text from a PDF
Video conversion
Video converts in your browser too, with nothing uploaded and no cap on the file size. Moving a video into a different container, which is what most of these are, takes about a second no matter how long the video is.
Popular conversions
How it works
imagetoolbox is a free image converter and a set of image tools that run in your browser. Your browser already knows how to read most image formats, and this site adds a little extra code for the rest, like HEIC and TIFF. Every file is turned into raw pixels on your own computer, then saved again in the format you picked. The server only sends you this page. That's why the converter is free, and why your images stay private.
Common questions
Is the image converter free?
Yes, properly free. No paid tier, no trial, no watermark on the result and nothing to sign up for. Put as many files through it as you like, as often as you like.
Are my files uploaded to a server?
No. The image converter runs inside your browser, on your own machine, so your files never go anywhere. Big ones are fine too, up to whatever your browser can hold.
What is the best free image converter?
The one that doesn't make you wait for an upload, doesn't ask for an account and doesn't stamp a watermark on the result. This site converts between PNG, JPG, WebP, AVIF, HEIC, GIF, BMP, ICO, SVG and TIFF entirely inside your browser, so the file never travels anywhere and there's nothing to sign up for. It's free with no limit on how many images you convert.
How does converting an image in the browser work?
Your browser already knows how to read and write images, since that's most of what it does all day. Dropping a file here hands it to that machinery: the picture is unpacked into raw pixels, then saved again in the format you chose, all on your own device. The newer formats that browsers don't write natively are handled by small code libraries the page loads as it needs them.
Which image format should I use?
JPG for photographs that have to work everywhere, PNG when you need transparency or exact pixels such as a logo or a screenshot, and WebP for anything going on a website, since it's smaller than both at the same visible quality. AVIF is smaller still and worth using when only browsers will see the file. HEIC is what an iPhone gives you and is usually the thing to convert away from.