About Image Tools
Image tools are the section almost everyone reaches for at some point. Phone photos too heavy for messengers, ratios that don't fit Instagram or YouTube thumbnails, email attachments capped at 25 MB — they all start and end here.
Many users worry about uploading personal photos to random conversion sites. Photos carry GPS coordinates, camera models, and timestamps in EXIF metadata that you can't see but anyone can read. JiniTools processes every image entirely inside your browser. Nothing is uploaded; closing the tab clears memory.
Tools range from single quick edits (just compress, just convert) to batch jobs that apply the same recipe to dozens or hundreds of files. Pick a single-action tool for one-off work, and the batch tool when you need consistency at scale.
What people use it for
Shrink for chat or email
Files over 5 MB get rejected by some messaging and email clients. Drop to 70–80% quality and size falls to a third or fifth with no visible change.
iPhone HEIC → JPG
iPhone's default HEIC format breaks previews in many Korean blog platforms, older Word docs, and some chat apps. Convert to JPG/PNG before sharing.
Match platform aspect ratios
Instagram square (1:1), Stories (9:16), YouTube thumbnails (16:9). Pre-crop to avoid auto-crop surprises after upload.
Combine images into one PDF
Passport scans, receipts, contracts — multiple photos into one PDF with order and size locked.
Which tool to pick
- Just reduce file size Image Compressor. Slider at 70–80% is the sweet spot.
- Format mismatch Image Format Converter (PNG↔JPG↔WebP), HEIC → JPG.
- Wrong size or ratio Image Resize (exact pixels), Image Crop (drag a region).
- Many files at once Image Batch (resize + convert + compress together).
- SVG icons SVG → PNG at any resolution.
FAQ
How much should I lower quality when compressing?
70–80% is the sweet spot for photos. Below 60% you start seeing block noise in skies and skin tones. Use 90+% for print, 70–80% for web.
PNG vs JPG — which is smaller?
For photos, JPG wins by a huge margin (e.g., 5 MB PNG vs 800 KB JPG). PNG is better for transparency, text, icons.
Should I use WebP or AVIF?
Modern browsers all support them. WebP is 25–35% smaller than JPG; AVIF roughly 50%. Some messengers still lack support — check the destination.
Can I batch-resize many photos?
Yes — Image Batch lets you set "width 1080 px, quality 80%" once and apply to as many photos as you want.
What exactly does "browser-only processing" mean?
Files never leave your device. Processing happens in browser memory; closing the tab deletes everything. You can verify this in DevTools → Network tab.
