File formats
JPG, PNG or WebP: choose the right output
A format change can improve compatibility, but it cannot restore missing detail. Here is how to choose an output for a photo, screenshot, or transparent graphic.
Read guidePractical image help
Get the right file, not just a smaller file.
Start with the requirement you need to meet. These guides explain the actual PixelPrep Tools workflow, show dimension calculations, and flag the limits you should check before sharing or submitting an image.
Phone photos
Convert an iPhone HEIC photo to JPG
Use a compatible still-image copy for a form or another device, while keeping your original iPhone photo.
Read guideFraming
Crop, fit or resize: get the frame you intended
Making the photo smaller inside a frame and making the downloaded file smaller are different operations. Choose the control that matches your goal.
Read guideUpload limits
Make a photo fit an upload size limit
Balance file size, dimensions and legibility. A file under the limit is only useful if the receiving site can open it and the contents remain clear.
Read guidePrinting
Turn millimetres and inches into image dimensions
A pixel canvas is not a print-size instruction. Use the dimensions as a starting point, then set and check the physical size in your printing software.
Read guideDocument photos
Before resizing a passport or ID photo
A sizing preset cannot make a photograph officially compliant. Start with the application’s rules, especially where editing or home printing is prohibited.
Read guideKnow the tool’s limits
Inputs can be JPG, PNG, WebP, AVIF, GIF, BMP, HEIC or HEIF, up to 40 MB and 40 megapixels per image. Decoding depends on the file and browser. Outputs are still JPG, PNG or WebP images, at most 8192 pixels per side and 24 megapixels total. Animated inputs become one frame. Document presets produce images, not PDFs. No AI retouching or official-photo certification is performed.
The examples describe this editor and use explicit dimension calculations; they are not guaranteed file sizes or acceptance results. Official requirements are linked where relevant. Report a correction or ask for help.