Compress an image to 500 KB
Three steps. The algorithm does the searching; you just state the limit.
Upload your image
Drop a JPG, PNG, WebP, HEIC, AVIF, or GIF onto Sukat’s drop zone. iPhone HEIC works directly — no separate convert step needed.
Set 500 KB as the limit
Type 500 in the Maximum File Size field and pick KB. Pick WebP for the web, JPEG for visa portals and CMS uploads that require JPG.
Convert and download
Click Convert & Download. Sukat binary-searches for the highest quality that fits under 500 KB and saves the file locally.
When a 500 KB image matters
500 KB sits at the looser end of the cap range — large enough that the photo still feels like a photo, small enough that pages stay quick and inboxes stay friendly.
- Portfolio site hero images. Photographers, designers, and architects who serve full-bleed hero shots at 1800–2400 pixels. 500 KB holds genuine detail without dragging the page-load budget over the cliff.
- Schengen, French, and German visa portals. Several EU visa upload systems cap the applicant photograph at 500 KB. Sukat lands precisely under the ceiling so the upload doesn’t bounce.
- Magazine-style content blocks. Substack, Ghost, and Medium covers render at full publication width. 500 KB lets the cover image carry the post instead of looking like a thumbnail.
- Multi-photo email attachments. Ten photos under a 5 MB Gmail attachment cap = 500 KB each. The maths is clean and the recipient still gets sharp images.
- Wikipedia article images. Wiki guidelines recommend uploads be small enough to load on slow connections; 500 KB is comfortably inside that envelope at a high pixel count.
- High-quality blog heros. Where the image is the article — food photography, travel writeups, architecture pieces — 500 KB is the floor below which detail starts to suffer.
- LinkedIn cover images. LinkedIn renders cover images at 1584×396 desktop. 500 KB keeps the cover crisp without forcing the platform’s re-compressor to do violence to it.
Built around an exact 500 KB ceiling
At looser ceilings the temptation is to estimate — but visa portals and portfolio hosts still enforce hard caps. Sukat hits the number.
Hits 500 KB, not “around” 500 KB
The standard online compressor gives you a quality slider and lets you guess. Most attempts at 500 KB land somewhere between 380 KB and 720 KB — fine for a blog, fatal for a visa portal that rejects anything above the cap. Sukat takes the constraint directly: 500 KB, find the highest quality. Internally it runs a binary search over the quality scale, converging in roughly seven re-encodes on the highest quality that still fits.
Original dimensions, nearly always
500 KB is enough room that for the overwhelming majority of photos Sukat doesn’t need to downscale dimensions at all — quality reduction alone gets the file under the ceiling. A 2400-pixel WebP at 500 KB is visually identical to its source for almost every photo. The live preview shows the actual output dimensions before you commit.
WebP advantage still holds at 500 KB
Some compressors will tell you the JPEG-vs-WebP gap closes above 300 KB. It narrows; it doesn’t close. Pick WebP at 500 KB and you typically get a sharper output at the same byte budget — or a smaller file at the same visual quality. Pick JPEG only when the destination requires it.
HEIC-aware
Shot it on iPhone? Sukat decodes HEIC directly — no separate convert-to-JPG step. Most online compressors fail silently on HEIC input, which is the format your phone is shipping by default.
Privacy by default
Compression runs entirely in your browser via the Canvas API. Your images never reach a server. Useful for portfolio drafts and even more useful for visa-photo uploads where the photo carries real identity data. Verify by switching to airplane mode after the page loads.