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Compress image to 100 KB

Forms, profiles and email, without blocks or smudges.

PrivateNo uploadsRuns in your browser

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Format
Quality: set to fit the file size
Quick target

What fits in 100 KB

Where 100 KB is asked for

  • Job sites and online CVs that ask for a profile photo
  • University and college application forms
  • Email, when a photo has to go to many people
  • Chat and support forms that refuse big files

How big the picture stays

About 1000 to 1900 px on the long side. Busy photos (trees, crowds) keep about 1000 px, smooth ones (sky, walls) keep more.

Phone photo
3.3 MB, 4032 x 2663 px
After
89.4 KB, 963 x 636 px

Tested on a 3.3 MB family photo from a phone: faces and text on signs still clear at 2x zoom.

Tip for 100 KB

If a form says 50 to 100 KB, this page lands at about 90 to 99 KB, inside the range.

Other sizes: 50 KB, 20 KB, 200 KB, 500 KB.

How KB is counted. Here 100 KB means 100,000 bytes. Some sites count 100 x 1,024 = 102,400 bytes (sometimes written KiB). A file under 100,000 bytes passes both.

How to compress an image to 100 KB

  1. Choose photos

    Tap the big button or drop photos on it. You can add many at once, or paste a picture.

  2. It fits 100 KB

    Each photo is made just under 100 KB straight away. The row shows the size before and after.

  3. Check and download

    Zoom in on the before and after to see it is clear, then download one photo or all as a zip.

Good to know

  • Max file size keeps the whole picture and balances pixel size and quality, so the file lands just under the limit and still looks clear. The row shows the quality it settled on.
  • Paper with text, such as a form or certificate, keeps more pixels so the words stay readable, and may be saved in grey for a very small size.
  • Longest side limits the longer edge and keeps the aspect ratio. 0 keeps the original size, and images smaller than the limit are never enlarged.
  • Large photos are processed in the background, so the page stays smooth. SVG files are turned into pixels at their own size.
  • Animated GIF and WebP files are converted as a still image of the first frame.
  • Green output sizes are smaller than the original. Turning a small JPEG into PNG usually makes it larger, because PNG is lossless.
  • The zip is built in the browser and stores the files without extra compression, since the images are already compressed.
  • A file that fails to decode shows the reason on its row. HEIC and RAW files are the usual cause; export them as JPEG from your phone or camera software first.

Where people use it

  • Job site profile photo

    Upload a clear photo to a job site or online CV that wants under 100 KB.

  • University application

    Fit photos and scanned pages into the college form limit.

  • Email to many people

    Send a photo that opens quickly for everyone.

  • A PDF that is too big?

    Shrink a PDF the same way.

    Compress PDF

Why this one

A 100 KB target keeps about 1000 to 1900 pixels on the long side with the quality kept in a clear range, not a smudged copy at full size.

  • Lands at about 90 to 99 KB, inside a 50 to 100 KB range.
  • Sharp at 2x zoom on a phone or laptop.
  • Nothing is uploaded. Your photos stay on your device.

What you can change

  • Target already set to 100 KB
  • Keep the format or switch to JPEG or WebP
  • Longest side limit in pixels
  • Many photos at once, one zip

People find this page by searching

  • compress image to 100kb
  • reduce image size to 100kb
  • jpg to 100kb
  • photo below 100kb
  • image resize to 100kb online
  • compress photo to 100kb for email
Cite this tool
  • APA
    sdev.in. (n.d.). Compress image to 100 KB online [Web tool]. https://www.sdev.in/tools/compress-image-to-100kb
  • MLA
    "Compress image to 100 KB online." sdev.in, https://www.sdev.in/tools/compress-image-to-100kb.
  • Chicago
    sdev.in. "Compress image to 100 KB online." https://www.sdev.in/tools/compress-image-to-100kb.
  • BibTeX
    @misc{sdev-compress-image-to-100kb,
  title = {Compress image to 100 KB online},
  author = {{sdev.in}},
  howpublished = {\url{https://www.sdev.in/tools/compress-image-to-100kb}},
  note = {Web tool}
}

Questions people ask

How do I make a 100 KB JPG?

Choose your photo. The 100 KB target is already set, so the tool makes a JPG just under 100 KB right away. Press Download.

My form wants a photo between 50 and 100 KB. Will this work?

Yes. The tool aims close to the target, usually 90 to 100 KB, so it lands inside a 50 to 100 KB range. For exact pixels and a KB range too, use the form photo tool.

Will my photo still be clear at 100 KB?

Yes, as clear as the size allows. The tool keeps the whole picture and never crops it. It lowers the pixel size a little and keeps the quality in a good range, instead of pushing the quality so low that faces turn into blocks. Zoom in on the before and after to check.

Is the file really under 100 KB?

Yes. It aims just under 100000 bytes, so it passes whether a form counts a KB as 1000 or 1024 bytes. The row shows the exact size before and after.

What happens to a PNG?

A PNG photo cannot get this small and stay clear, so it is saved as JPEG and the row says so. A PNG with see-through parts, such as a logo, stays PNG.

Are my photos uploaded?

No. Everything happens in your browser on your own device. Nothing is sent to a server.

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