ImgSquash
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Compress an image to under 100KB

Government portals, job applications and school forms often reject anything over 100KB. Lower the size and quality until it fits.

Drop images here

or · JPG, PNG, WebP, GIF

Free plan: up to 20 images. Get the unlimited desktop version.

How it works

1

Drop the photo

Scans and phone photos both work.

2

Start at 1000px / quality 60

Pre-filled. Most photos land at 60–120 KB. Check the reported output size.

3

Adjust down if needed

Still over 100 KB? Drop the dimensions to 800px or the quality to 50. Re-run until the number is under.

Questions

How do I know the file is under 100KB?

The per-file report shows the exact output size after processing. Re-run with lower settings if it is still over.

Will 100 KB look terrible?

At 1000px on a screen it looks fine. It will look soft if printed. For a portrait photo on a form, quality 60 is normally acceptable.

Why do some sites demand under 100KB?

Legacy upload limits and storage costs. It is an arbitrary server-side cap, not a quality standard.

Is my image uploaded?

No. Compression runs in your browser; the file never leaves your machine.

Real upload caps people run into

100 KB is one of the most common thresholds. It comes from legacy portals with fixed server-side limits, not from any quality standard.

CaseValueWhy it matters
Government and visa portalsOften 100 KB, sometimes 50 KBThe strictest common case. Passport photo uploads are frequently 20–50 KB.
Job application systems100–200 KBOlder ATS platforms reject anything larger without explanation.
School and exam registration50–100 KBTypically also requires exact pixel dimensions, like 200 × 230.
University admissions100–500 KBVaries wildly between institutions.
Insurance and banking forms500 KB – 2 MBLooser, but often requires PDF rather than an image.
Photo printing servicesNo cap, and that is the pointNever compress below 1–2 MB for print — resolution is the whole product.

Five mistakes that waste the most time

Free web version vs the $19 desktop app

Free, this pageBulk Image Kit $19
Batch limit20 imagesUnlimited
Preset 1000 px / quality 60YesYes, plus per-image tuning
Output size reportExact bytes per fileExact bytes per file
RenameSuffixPattern-based
OfflineAfter first loadAlways

More questions

How do I compress an image to exactly 100 KB?

There is no exact-target mode. Set 1000 px and quality 60, check the reported size, then lower quality in steps of 10 until it fits. Usually one or two adjustments is enough.

Can I get an image to 20 KB?

Yes, but only by cutting dimensions hard. A 400 × 500 headshot at quality 55 lands around 20–30 KB. Anything photographic cannot go below roughly 15 KB and stay usable.

Why is 100 KB such a common limit?

Legacy server configuration and storage economics from the 2000s. It has nothing to do with what the eye can see.

Will a 100 KB photo be accepted by a passport service?

Only for the portal upload. Do not print from it — print from the original.

Need more than 20 at a time?

Bulk Image Kit is the same engine as a single offline file — unlimited images, resize + compress + watermark + rename, one-time $19, no subscription.

See Bulk Image Kit — $19

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