PRIVACY-FIRST · Images never uploaded

Image processing that never leaves your computer

No file limits · No size limits · No sign-up · No watermark — decoding and encoding happen entirely in your browser.

Images never uploadedCompression happens in your browser; try it offline to verify
No images yet — drag, click, or just ⌘V paste
Output settings
Best per input: photos → WebP, screenshots/graphics → quantized PNG
Quality78
Visually lossless ≈85+Balanced 70–85Tiny size <70
Expected output ≈15–20% of the original (content dependent)
Longest edgeAspect ratio kept
Platform presets
Advanced
Keep ICC · wide gamutKeep profiles like Display P3 when detected
PNG quantize (TinyPNG style)imagequant palette compression; falls back to lossless if unavailable
  • ENGINEWASM local engine
  • OFFLINEPWA offline ready
  • EXIFMetadata stripped by default
  • LIMITNo file-count limits

01 / FEATURES

Why ImgFlow

No limits, no paywall popups

No file-count or per-file size limits. Competitors nag you above 0.5MB — we never do.

Images never leave your device

Decoding and encoding run entirely in your browser via WebAssembly. There is no upload endpoint at all.

Free, no watermark, no tricks

Zero server cost means free forever. No account, no watermark, no paywall.

China platform presets

WeChat avatar, Taobao main image ≤3MB, Xiaohongshu notes, 1/2-inch ID photos — one click.

Batch & ZIP download

Drop hundreds of files at once; the memory-budget scheduler keeps it stable. Download singly or as a ZIP.

PWA, works offline

Install to your desktop or home screen and keep working without a network.

02 / TOOLS

Popular tools

Browse all tools →

03 / PRESETS

Platform presets for China

WeChat, Taobao, Xiaohongshu, ID photos… every platform has its own size and file-size rules. Pick a scene and the parameters fall into place.

WeChat Avatar640×640 square · JPG · ≤200KB, crisp even cropped to a circleView preset →WeChat Chat ImageLong edge ≤1280px · JPG · quality 80 — fast to send, faces stay sharpView preset →Taobao Main Image (≤3MB)800×800 square · JPG · hard ≤3MB limitView preset →

Browse all presets →

04 / FAQ

FAQ

FAQ

Are my images really never uploaded?

Really. All decoding, resizing, and encoding run in your browser via WebAssembly — this site has no image upload endpoint at all. Verify it yourself in the DevTools Network panel: no image request appears during processing, and it keeps working with the network off.

Is it free? Will it nag me with VIP popups like other tools?

Completely free: no file-count limits, no per-file size limits, no sign-up, no watermark. Competitors run paywalls because they pay server bills; here every image is processed on your own device at zero server cost, so it can stay free forever.

Which formats are supported?

Input: PNG / JPG / WebP / AVIF / HEIC (iPhone photos). Output: JPG / WebP / PNG / AVIF. HEIC decodes natively in Safari; other browsers load a decoder automatically — nothing to install.

How many images can I process at once?

There is no limit. A memory-budget scheduler queues work based on your device, so dropping a few hundred large photos on an iPhone will not crash it. Download one by one or as a single ZIP afterwards.

Will processed photos leak where they were taken?

No. Output images strip EXIF and GPS data by default, so sharing them never reveals the shooting location — that is exactly why “metadata does not carry over” is the default behavior.

Does it work without a network?

Yes. ImgFlow is a PWA (an installable offline app). After the first load the core engine is cached locally — compress and convert on a plane or in the subway.