Convert image formats
Convert between JPG, PNG, WebP, AVIF, GIF and HEIC without uploading anything. Reads iPhone HEIC photos and AVIF files that many apps still cannot open. Convert many images at once and save them as a ZIP.
Settings
How to use
- 1
Add images
Drag and drop into the box or click to choose. You can add several at once.
- 2
Choose format and quality
Pick the output format and a quality from 1 to 100. Higher means better quality and a larger file.
- 3
Convert and save
Press Run. Images are processed one by one and can be saved as they finish, or all together as a ZIP.
Choosing a format
For photos, WebP and AVIF give the smallest files. WebP opens in virtually every browser and app; AVIF is another 20–30% smaller but does not open in older software. To keep transparency, use PNG, WebP or AVIF — JPG cannot hold transparency, so transparent areas become white.
When you are not sure what the recipient can open — government forms, office documents — JPG or PNG is the safe choice. GIF output is reduced to 256 colours, so it suits diagrams and logos rather than photos.
Frequently asked questions
Can I convert HEIC photos?
Yes. HEIC / HEIF photos from iPhone and iPad can be converted to JPG, PNG, WebP and more. Decoding uses libheif compiled to WebAssembly, so the file never leaves your browser.
Will the quality drop?
JPG, WebP and AVIF are lossy, so even at quality 100 the result is not bit-identical. For photos, quality 80–90 is visually indistinguishable. Converting to PNG is lossless.
Is EXIF or location data kept?
No. The image is decoded to pixels and re-encoded, so metadata such as capture time, camera model and GPS location is not included in the output.
How many images can I convert at once?
There is no limit. Images are processed one at a time, so large batches do not exhaust your device's memory. Save each as it finishes, or all of them as a ZIP.
Help us improve the service
If a conversion fails, sending us the circumstances helps us track down the cause. Knowing which devices and formats fail most often, and how long processing takes, lets us revise the supported formats and fix the bugs behind them. If you don't mind, leaving this on is a real help.
What is sent
- The tool you used and the settings you chose (output format, quality, etc.)
- Your device specs (GPU, memory, core count)
- The input format with a rough size
- How many files succeeded or failed and how long it took
- The error type and details when something fails
What is never sent
- The files themselves and file names
- Text, subtitles or prompts you add to a video
- The text to be read aloud, voice descriptions, the pronunciation dictionary and saved voices
- The text in PDFs, the text you rewrote or redacted, passwords, font names and the page ranges you enter
- IP addresses
The data goes only to this site's own server, never to a third-party service.
Details sent by specific tools (counts, times, kinds and yes/no only)
In addition to “What is sent”, text to speech and the PDF tools send the following details.
- Text to speech
- The approximate number of characters and sentences, how many parts the text was generated in, and how long the AI model took to load.
- PDF tools (all)
- The page count range, whether editing is restricted, whether a permissions password was entered, and whether the PDF is signed or encrypted.
- PDF text editing and redaction
- The numbers of rewrites, deletions, white-outs and redactions, the number of rewritten characters by source (original font or fallback font, the latter as a range) and the fallback typeface, the kinds of reasons why lines cannot be edited, and the number of pages turned into images by redaction and the reasons.
- PDF page operations and conversion between images and PDF
- The numbers of inputs and outputs, of pages rotated, deleted, duplicated or moved, of images inserted as they are, converted, in HEIC format or with corrected orientation, and of pages rendered at a lower resolution (all as ranges), whether the original was updated in place or a new document was created, and whether the original protection was reapplied, form fields were written into the page and bookmarks were added back.
- PDF compression
- The numbers of inputs and outputs, of images downsized, not downsized and black-and-white, of downsized images whose transparency was also downsized, that stayed lossless or that were converted from CMYK to RGB, and how many times the file was compressed (all as ranges), the kinds of reasons images were not downsized, whether the target size was met and the kind of reason it was not met, the range of how much smaller the file got, whether the original protection was reapplied, and whether the original PDF was returned unchanged.
- PDF cropping and page numbers
- The numbers of inputs and outputs and of pages cropped, numbered or with their margins reduced (all as ranges), how the margins were set, how the pages to crop or number were chosen, the number format and position, the range of the starting number, that the original was updated in place, and whether the original protection was reapplied.