Local target-size compression

Compress Image to 50KB

Balance a compact 50KB goal against quality and dimensions with a bounded, transparent browser search.

Runs in your browser
No image upload
Review before download

Choose an image

Add one supported image. A replacement is accepted only after it passes local validation.

Static JPG/JPEG, PNG, and WebP. Animated WebP is rejected. Processing stays in this browser.

Set target and compression behavior

Choose exact decimal KB or MB, whether dimensions may change, and the output format.

Exact file-size target

Target valueUnit

Exact target: 50,000 bytes (1 KB = 1,000 bytes; 1 MB = 1,000,000 bytes).

Compression behavior

Strict target — may reduce dimensionsQuality is tested first. If needed, pixel dimensions are reduced without cropping or stretching.Keep dimensions — find the closest resultOriginal pixel dimensions stay fixed. A result above the target is labeled clearly, not reported as achieved.

Output formatOutput format

JPG transparency backgroundFill transparent pixels with

Review the actual result

PicRecast tests real encoded files and reports the selected file's exact bytes before download.

Choose an image to begin.

Three-step workflow

How to target 50KB

1Choose one supported image.
2Keep the 50,000-byte preset or edit it, then choose a mode and format.
3Verify actual output bytes and download only after reviewing the result status.

Choose the tradeoff that fits this target

Target bytes, image detail, pixel dimensions, and output format interact. Review the verified result instead of relying on an estimate.

A compact target for small uploads

50KB can suit small web forms, compact uploads, and thumbnails, but image detail and dimensions may still need a visible tradeoff.

Quality first, dimensions only when allowed

Strict searches quality before dimensions. Keep dimensions finds the closest same-size result and marks it above target when necessary.

Format-specific behavior

JPG and WebP search quality 10–100. PNG runs lossless OxiPNG without invented quality controls or palette loss.

Verified rather than estimated

Every reported size comes from an encoded Blob, and no more than 32 candidates are created.

File size is not pixel size

Width and height describe pixels; KB and MB describe encoded bytes. Reducing either quality or dimensions can change file size.

JPG, PNG, and WebP differ

JPG and WebP support quality search. PNG uses lossless OxiPNG, so a very small target may require proportional resizing.

Metadata may be removed

Newly encoded files may not retain EXIF metadata or color profiles. Keep the original and inspect the download.

Why a result can miss the target

Format overhead, safe quality limits, minimum dimensions, and bounded attempts can leave a verified result above the target.

Local processing boundary

Validation, candidate encoding, comparison, preview, and download stay in this browser. Images are not sent to a processing API.

50KB compression FAQ

What counts as reaching 50KB?

The verified Blob must be 50,000 bytes or smaller.

Can I prevent resizing?

Yes. Choose Keep dimensions; the result may be above target and will be labeled accordingly.

Does WebP transparency survive?

Yes when WebP or PNG is selected. JPG uses the visible background you choose.

Is anything stored?

No image or candidate is written to persistent browser storage.