Try a KB target. Check every result. Keep the detail you need.
Read the guideJPG, PNG or WebP · up to 20 files
Add a few images to see their size, preview your changes and download the result.
Quick setup
Applies settings only. Changing settings clears existing results; originals stay untouched.
Save a reusable recipe for this tool. Files and results are never saved. Names, text watermarks and PDF page numbers may be included; avoid sensitive text. How saved settings are stored (new tab)
Your original files stay untouched.
Work towards an upload limit for JPG or WebP. Match KB or KiB to the destination, then check actual bytes and image quality. A target is an upper limit to try, not a guaranteed result.
Back to workspace ↑Choose JPG or WebP and enter the limit. KB means 1,000 bytes; KiB means 1,024. The shortcuts start at 80% quality and keep the original dimensions.
Inspect fine text, faces and edges. The tool can lower encoding quality to try to fit; it does not automatically reduce dimensions to force a result.
Check each pass or fail label. If a target is missed, review the smaller-dimensions suggestion and process again. Save one image directly or several in a ZIP.
The tested grain chart below deliberately has a lot of detail. A normal target and an unrealistically small target demonstrate both a passing result and the target-not-met warning.
Original synthetic charts are not user documents or photographs. Real interface captures and licensed photos are labeled separately. Browser encoding can vary. Grain charts use KiB; the photograph uses KB. Match the unit shown in each example.
JPG · 80% starting quality · target 200 KiB · edge 0
2,368,997 B → 201,327 BWithin target
An original synthetic grain chart, not a photograph. The encoder can reduce quality to try to fit the target; inspect detail before saving.
Same chart · JPG · target 1 KiB · edge 0
2,368,997 B → 73,350 BTarget not met
A missed target stays clearly marked. The engine does not shrink dimensions automatically to force a match.
JPG · 80% starting quality · edge 1600 px · target 500 KB
Photo: Hannes Röst · CC BY-SA 3.0 · source, changes & license
1,610,954 B → 202,308 BWithin target
A real stitched panorama by Hannes Röst, not a generated photograph. This example resizes and re-encodes it. Inspect distant detail before sharing; results vary with the image and browser.
Adds to the current queue without replacing files. Applying settings clears older results; originals stay untouched.
Original examples, clear steps and honest limits. Download the files and repeat the checks.
Turn mixed images into consistently named JPGs, limit the longest edge and download one ZIP. A complete browser-based hand-off workflow with editable settings.
Read the illustrated guide (new tab) 02 / IMAGEUnderstand KB versus KiB, choose quality and dimensions, and recover when an image misses the target. Includes a real passing and failing compression example.
Read the illustrated guide (new tab)No. The tool tries lower encoding qualities for JPG and WebP, but does not keep shrinking dimensions to force a target. It marks results that miss the target; you can choose a smaller longest edge and try again.
JPG and WebP quality settings can lose detail. Use the original/result comparison to decide whether the trade-off works for your image.
PNG and WebP support transparency in this tool. Converting to JPG fills transparent areas with white.
No. Image processing is local to this browser. Leaving or refreshing the workspace clears its files and results. Download what you want to keep first.
