Convert Images Privately – HEIC, JPG, PNG, WebP
Convert HEIC, JPG, PNG, WebP and more right in your browser. Your images never leave your device.
- 100% local processing
- No upload or account
- Free, no watermark
0 files converted
Convert HEIC, JPG, PNG, WebP, GIF, BMP and AVIF entirely in your browser — no upload, no server, no signup. Your files never leave your device.
Drop images or folders here
Choose filesJPG · PNG · WebP · HEIC · HEIF · AVIF — multiple files supported
Max 100 files · up to 50 MB each · processed locally in your browser
Advanced settings
✓ Your files never leave your device. All conversion happens locally in your browser.
AutoCut: cut 1–3 h of footage locally.
Remove silence and filler words, see exactly what was kept or removed, and optionally generate AI shorts. Video and audio stay on your device.
What is FormatFlash?
FormatFlash is a free online image converter that runs entirely in your browser. It converts HEIC, JPG, PNG, WebP, GIF, BMP and AVIF images in seconds — without uploading a single file to a server. Your photos are decoded and re-encoded locally on your own device, so nothing is ever sent anywhere.
That makes it a fast, private alternative to upload-based converters. There is no account, no watermark and no software to install: open the page, drop your image, pick a format and download.
Which formats can you convert?
You can load the most common formats — including iPhone HEIC/HEIF photos, JPG, PNG, WebP, GIF, BMP and AVIF — and output JPG, PNG, WebP or AVIF. Popular conversions include:
- HEIC to JPG — make iPhone photos open anywhere.
- PNG to WebP and JPG to WebP — smaller files for faster websites.
- WebP to JPG — for apps that cannot open WebP.
- Compress an image or reduce its size — for email and forms.
Why convert images in your browser?
Most free converters ask you to upload your photos, which means your files are copied to someone else's computer and may be stored or processed there. FormatFlash takes a different approach: conversion runs client-side, so your images never leave your device. It is ideal for personal photos, IDs, screenshots and anything you would rather not share.
- No upload and no server — files stay on your device.
- No signup, no email and no watermark.
- Works offline once the page has loaded.
How it works
- 1Pick your imageDrop a file or choose one from your device.
- 2Choose JPG, PNG or WebPSet the output format and quality.
- 3Download instantlyGet your converted image in seconds.
Popular conversions
HEIC to JPG · HEIC to PNG · PNG to JPG · JPG to WebP · WebP to JPG · Compress image · Image to PDF · Remove background · AVIF to JPG · AVIF to PNG · Reduce image size
Popular guides
HEIC to JPG on Windows · HEIC to JPG on iPhone · What is HEIC? · Reduce an image to 100 KB · Private image conversion
Privacy & compliance
Client-side conversion & the GDPR · Why upload-based converters raise GDPR risk · EXIF & GPS removal · OCR without upload · FormatFlash Embed
Frequently asked questions
Is FormatFlash free?
Yes. The converter is completely free, with no account, no watermark and no daily limit.
Are my images uploaded to a server?
No. All conversion happens locally in your browser, so your files never leave your device.
Which formats are supported?
Input: HEIC/HEIF, JPG, PNG, WebP, GIF, BMP and AVIF. Output: JPG, PNG, WebP and AVIF.
Is there a file size limit?
There is no fixed limit — the only practical limit is your device's available memory.