Compress Image to 300 KB
A 300 KB cap is the comfortable upper bound for hero imagery on a fast website.
Your images stay on your device. Nothing is uploaded.
300 KB is the limit most performance audits suggest for individual hero images. The defaults below produce a 1600 px WebP at quality 0.72 — broadly invisible quality loss and reliably under the cap.
Compression is local. Drop a photo to begin.
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Frequently asked questions
- How do I compress an image to 300 KB?
- Upload your image and the default settings on this page are pre-tuned to land you around 300 KB. Use the quality slider to nudge the file size up or down — the result preview shows the exact byte count before you download.
- Will the image still look good at 300 KB?
- For most photos, yes. The pre-tuned quality and max-dimension settings prioritise visual quality while landing close to 300 KB. Very small targets (under 100 KB) on detailed images may need a visible quality reduction.
- Which format gives the best result for 300 KB?
- WebP usually produces the smallest file at a given quality, then JPEG, then PNG. The format selector lets you switch; the default reflects the best balance for 300 KB.
- Can I compress to exactly 300 KB?
- Browser compression is quality-driven, not byte-driven, so the resulting file size is close to — but not exactly — 300 KB. Staying under a target is what email clients, forms, and platforms enforce, so a slightly smaller file is always safe.
- Can I batch compress multiple images to 300 KB each?
- Yes — use the bulk compressor. Drop a folder of images and each one is processed with the same settings, then downloaded as a ZIP.
Hit your 300 KB target in one click.
Pre-tuned quality and dimension defaults land you close to 300 KB. No upload, no signup.
Start compressing