Compress an image to 100 KB

RequirementValue
Target sizeUnder 100 KB
Pixel sizeLeft unchanged
FormatJPG
Where it runsYour browser — nothing is uploaded

A hundred kilobytes is a comfortable limit. At this size a photograph keeps most of its detail, so this page leaves the pixel dimensions alone and only reduces the quality until the file fits.

When to keep the dimensions

Use this when the form gives you a file-size limit but says nothing about pixels — a scanned certificate, a supporting document, a photograph that has to stay legible at full size. Shrinking the dimensions in that situation throws away detail you did not need to lose.

When the form does state a pixel size, open More options and set the width and height. Getting the kilobytes right while the dimensions are wrong still produces a rejection, and the message usually blames the size rather than the shape.

Where the file size actually goes

Two things make a photograph expensive: fine detail and noise. A picture taken in poor light is full of grain, and grain is random, which is exactly what compression is worst at. The same subject shot in daylight against a plain wall can be half the size at the same quality.

So if a file refuses to come down without turning ugly, retaking the photograph in better light will do more than any setting here.

Documents and scans

A scanned page is different from a portrait. Text stays readable at surprisingly low quality, but only if the page was scanned straight and evenly lit. A photograph of a document taken at an angle, with a shadow across one half, compresses badly and reads worse.

If the document is a PDF rather than an image, use Compress PDF instead — it works page by page and keeps the document as a PDF.

Some portals also set a minimum

Aaple Sarkar refuses documents under 75 KB, and several exam forms state a range rather than a ceiling. If the form you are filling gives two numbers, use the band tool instead, which holds the file between them rather than pushing it as low as it will go.

Frequently asked questions

Does compressing to 100 KB change the photo dimensions?

Not on this page. The width and height are left exactly as they were and only the quality is reduced. Open More options if you also need to set a pixel size.

Why will my file not come below 100 KB without looking bad?

Usually noise. A photograph taken in dim light is full of grain, which compresses very badly. Retaking it in daylight against a plain wall often halves the size at the same quality.

Should I use this for a PDF?

No. Use Compress PDF, which works page by page and keeps the file as a PDF rather than turning it into an image.

Is 100 KB enough for a government form?

It depends on the form. Many accept up to 100 KB, but Aaple Sarkar caps photographs at 20 KB and documents at 500 KB. Check the limit printed on the upload page.

Compress a PDF · Compress to a size band · सर्व पोर्टल साईज यादी · All SetuKit tools