KBSnap

Crop an image to a fixed ratio

Lock the frame to 1:1, 4:3, 3:4, 16:9 or 9:16, position it, and export. No stretched pixels.

  • No upload
  • Exact target size
  • Batch ready

Drag images here, or click to choose

JPG / PNG / WebP / HEIC · up to 25MB each · batch supported

Files never leave your device — everything runs in your browser.

Aspect ratio
Fixed output width0 keeps the cropped pixels
px
Output format
Quality
92%

Crop first, resize second

Cropping changes what is in the picture; resizing changes how many pixels describe it. Doing it in that order means one re-encode instead of two, and the resize step then works on exactly the final framing — no wasted pixels, no double compression.

Ratios, and where they come from

  • 1:1 — Instagram feed, marketplace listings, 2×2 in ID photos
  • 4:3 — most phone cameras, projectors, 4×6 in prints
  • 3:4 — portrait framing, phone wallpaper, book covers
  • 16:9 — screens, video frames, slide decks
  • 9:16 — Stories, Reels, TikTok, vertical video

Why the frame is locked to the ratio

Free-form cropping is how you end up with a 1.03:1 image that an upload form quietly letterboxes. Locking the frame means the output ratio is exact, so the platform does not have to “help” by cropping again — often through the subject’s face.

Zoom is not the same as resize

The zoom control changes how much of the photo fills the frame; the output always keeps the full pixel density available inside the crop. Zoom in on a 4000 px photo and you still export 1080 px, not 270 px — the crop simply uses fewer of the original pixels.

How it works

1

Add images

Drop a file, several files, or a whole folder. Nothing is uploaded.

2

Set the spec

Pick the target from this page — it is already filled in for you.

3

Download

Exact-size output, or a ZIP when you came with a batch.

Frequently asked questions

Does cropping reduce quality?
The pixels you keep are untouched; the file is re-encoded once, so there is one generation of JPEG loss. Cropping never resamples the image.
Can I crop and resize in one step?
Crop here, then send the result to the resize tool. Two small steps give you an exact ratio plus exact pixels, which is what forms actually ask for.
Why does the frame not cover the whole image?
Your image ratio does not match the selected one. The frame shows the largest area that fits at the chosen ratio; drag and zoom to choose what stays.
Is the original file modified?
Never. You get a new download; the file on your disk stays as it was, and nothing is written to any server.

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