All image tools

Every tool is free, private and runs entirely in your browser — no signup, no uploads.

Quick answer

FitToKB is a free image-compliance toolkit: compress to an exact KB, convert HEIC/PNG/JPG/WebP, make passport & visa photos, resize signatures, and check dimensions — all in your browser, nothing uploaded.

Compress

Compress to Exact KB

Hit any target size + dimensions + format in one click, with a pass/fail check.

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PNG Compressor

Shrink PNG files in your browser, or convert to a smaller format.

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JPG Compressor

Reduce JPG/JPEG photos to an exact KB target without visible loss.

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Convert

HEIC to JPG

Convert iPhone HEIC/HEIF photos to JPG — and resize to a size limit.

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PNG to JPG

Convert PNG to JPG with a white background and optional size cap.

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JPG to WebP

Modern WebP output for the smallest files at the same quality.

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Photo & ID

Passport Photo Maker

Generate a compliant passport or visa photo for any country.

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Signature Resize Tool

Resize a scanned signature to the exact px + KB an exam form wants.

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Inspect

Photo Compliance Checker

Check any photo against a size + dimension + format requirement.

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Image Dimension Checker

Instantly see width, height, aspect ratio and file size — no upload.

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Compress your first image now

Free forever. No signup, no watermark, no upload. Everything runs on your device.

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