- Application photos and online profile uploads
- Product or listing thumbnails with a 100KB cap
- Forms that need a standard JPEG under 102,400 bytes
Exact 100KB image compressor
Compress an image to 100KB.
Not approximately. Not a percentage. Get the clearest JPEG at or below 102,400 bytes, measured and ready for a strict upload form.
No signupNo watermarkLocal processingVerified before download (“under 100 KB”)
Exact-size image engine
Set the ceiling. We find the fit.
Processed here0 bytes uploaded
Maximum size
Drop your imageor choose from your deviceJPG · PNG · HEIC · WebP · AVIF · up to 40 MB
01 / TARGET-SPECIFIC GUIDE
Why this ceiling
A practical application-photo limit
A 100KB budget is often enough for a clear headshot, document preview, or listing image when dimensions and JPEG quality are balanced instead of changed independently.
Balance detail and dimensions
FileFit keeps a high visual-quality floor and uses the largest useful dimensions it can fit. Very detailed scenes may need a smaller canvas than portraits or graphics with broad areas of color.
- Faces and primary edges look clean in the comparison
- The ready dimensions suit the destination preview
- The validation panel reports no more than 102,400 bytes
02 / THE DIFFERENCE
A measured result
Compression is an action.
Compatibility is an outcome.
Inspect
We verify the file signature, dimensions, format, and size before planning a change.
Search
The engine tests dimension and quality combinations instead of applying a generic preset.
Validate
The output is checked independently against the actual byte limit before it is called ready.
03 / HOW IT WORKS
Adaptive exact-size engine
Every byte has a job.
A percentage slider cannot know your upload limit. FileFit starts with the constraint, preserves a high visual-quality floor, then uses the available byte budget as fully as the image allows.
- 01Decode safelyTrue file type, real dimensions
- 02Find the scaleLargest useful pixel area
- 03Refine qualityIterative search, not a preset
- 04Prove the resultSize, format, image, privacy
05 / STRAIGHT ANSWERS
Before you drop a file
Nothing vague.
Will the result be exactly 100KB?
The result is at or below the maximum. FileFit searches for the clearest passing result instead of padding a smaller file with useless bytes.
What if a website says my 100KB image is still too large?
Some websites mean 100,000 bytes rather than 102,400. Use the custom-size tool with a slightly lower target, such as 97KB, and check the exact byte count FileFit reports.
Does the image upload anywhere?
No. The image is decoded, resized, encoded, and checked inside your browser. Network transfer for the image is zero bytes.
What happens to GPS and camera metadata?
It is not copied into the new JPEG. The result contains the rendered image pixels, which also avoids spending the size budget on invisible data.
Which image formats can I start with?
FileFit currently accepts JPG, PNG, WebP, and AVIF images and produces a standard JPEG result. It checks the file signature instead of trusting only the filename extension.