Compress Image to 30KB Online
Last reviewed: May 2026
30 KB sits in the gap between the 20 KB signature target and the 50 KB recruitment-photo target. It's an oddly specific number that shows up on a small set of banking-exam and state-PSC portals — the kind of cap where guessing a quality value rarely lands you under the line first try. Sukat hits 30 KB precisely. Drop image, type 30, download.
How to compress an image to 30 KB
- Upload your image. Drop a JPG, PNG, WebP, HEIC, AVIF, or GIF onto Sukat. iPhone HEIC works directly.
- Set 30 KB as the limit. Type
30in Maximum File Size and select KB. Pick WebP for the sharpest result, or JPEG if the destination explicitly requires JPG. - Convert and download. Click Convert & Download. Sukat reduces JPEG / WebP quality first; if the result still doesn't fit at quality 1, the algorithm downscales dimensions and tries again.
When do you need a 30 KB image?
30 KB is rare in modern web work — most modern portals settle on rounded multiples of 50 — but a handful of banking and recruitment systems still use it:
- IBPS PO and Clerk candidate photographs — many notifications use a 20–50 KB range; aiming at 30 KB hits the safe middle.
- SBI PO and Clerk photo uploads at the same banking-exam upload widget.
- RRB Officer and Office Assistant exams — same upload widget pattern as IBPS.
- Older state PSC photo uploads with hardcoded 30 KB ceilings predating the standardised OTR specs.
- Mid-range ID badge databases for corporate, school, and visitor management systems.
- Image-grid thumbnails on legacy sites where bandwidth budget per tile is around 30 KB.
Why Sukat for 30 KB
Hits 30 KB on the first pass. Generic compressors expose a quality slider; the same quality 50 setting can produce 20 KB from one photo and 90 KB from another. Sukat takes the constraint directly — set 30 KB, find the highest quality.
Live preview shows you what you're actually uploading. When the algorithm has to downscale dimensions to fit, the live preview displays the actual output dimensions in a soft-orange callout — so you know what you're attaching before clicking download.
WebP unlocks usable quality. Below 50 KB the format choice matters. WebP at 30 KB looks 25–35% sharper than JPEG at the same target. Use WebP wherever the destination accepts it.
Privacy. Compression runs in your browser. Your images never reach a server.
FAQ
What is 30 KB used for?
30 KB sits in the gap between the 20 KB signature target and the 50 KB recruitment-photo target. Common cases: IBPS / SBI banking exam candidate photographs, older state PSC photo uploads, ID badge databases with mid-range ceilings, and recruitment portals that pre-date the standardised OTR specs.
Will my photo look acceptable at 30 KB?
At 30 KB, faces remain clearly recognisable but expect mild compression artefacts on skin tones and gradients. Sukat will typically downscale to roughly 600–800 px on the long edge. For ID portraits this is exactly what the destination expects.
Should I pick JPEG or WebP at 30 KB?
WebP gives noticeably better quality — 25–35% sharper than JPEG at this tight a target. Pick WebP if the destination accepts it. If the portal requires JPG (most banking and recruitment portals do), pick JPEG.
Does Sukat downscale dimensions to fit 30 KB?
For most photos, yes. Sukat tries quality reduction first, then falls back to dimension downscaling. The live preview shows the actual output dimensions before you click download.
Is my image uploaded to a server?
No. Compression runs entirely in your browser via the Canvas API. Your images never reach a server. Verify by switching to airplane mode after the page loads.
Can I batch-compress many images to 30 KB?
Yes. Drop several images, set 30 KB as the target, and Sukat compresses each independently. Output downloads as separate files or as a single ZIP.
Other sizes
- Compress Image to 20KB — neighbour, tighter target for legacy systems
- Compress Image to 50KB — neighbour, the standard recruitment-photo ceiling
- Compress JPG to 50KB — JPG-format-specific 50 KB target
- Compress Signature to 20KB — signature-only flow at 20 KB
- Reduce Image Size in KB — pick any custom KB target
- Image Size Guide — full breakdown by platform and use case