Image Converter & Compressor (to Exact KB)

Convert HEIC, WebP or PNG to JPG and shrink photos under 100 KB or 50 KB for online forms. Free, private.

In plain words: Change a photo's format (for example iPhone HEIC to JPG), or shrink it below the size limit an online form demands. Pick the target size in KB and download. Limits vary, so check the portal's own rules.

🔒 100% Local Browser Execution — Files never leave your device ✓ No email · No sign-up · No watermark · Free

Output Format Compression Mode / Target KB Limit

Quality (86%) Max Width: px

🖼️

Drop photos here (HEIC, WebP, PNG, JPG, AVIF) or click to browse You can also paste an image from your clipboard (Ctrl+V) — batch convert & ZIP supported

🔗 Chain next workflow: Jump straight to a related tool

🛡️ Remove Location & Hidden Data from Photos 🔳 Free QR Code Generator (Never Expires) ⏺️ Free Screen Recorder with Webcam & Audio

How to Use Image Converter & Compressor (to Exact KB)

Drop one or more images (HEIC, WebP, PNG, JPG, and AVIF where your browser supports it) onto the dropzone, paste from your clipboard (Ctrl+V), or click "Try with Sample Photo".
Choose your output format (JPG, PNG or WebP), then either set the quality slider or pick a target file size (e.g. "Under 100 KB" for passport and government portals, or a custom KB target).
Download each converted image, or click "Download All (.ZIP)" to get the whole batch in one archive.

Private In-Browser Image Conversion & Target-KB Compression

Many online converters upload your personal photos, ID scans or client files to their servers and limit how many you can convert each day. WeShoal's Image Converter & Target-KB Compressor does everything inside your browser using HTML5 Canvas, with an iPhone HEIC decoder that loads when you first drop a HEIC file. Your images never leave your device.

How Target-KB Compression Works

Government portals, visa applications, university admissions and job boards often reject photos larger than 50 KB, 100 KB or 200 KB. A normal slider makes you guess a quality percentage and hope the file fits. Our target-size mode searches for the highest quality that fits under your limit (6 quality steps), and if it still doesn't fit, shrinks the image dimensions a little and tries again. Very small targets on large photos may not be reachable, so check the final file size.

Format	Best Use Case	Transparency	Browser Compression Efficiency
JPG / JPEG	Photographs, ID portals, email attachments	No (transparent areas become white)	High (tunable to a KB target)
PNG	Logos, screenshots, crisp UI graphics	Yes (8-bit alpha)	Lossless
WebP	Modern websites, e-commerce speed, blogs	Yes	Usually smaller than JPG at similar quality

Frequently Asked Questions

Are my photos uploaded to any server?

No. Every conversion, including iPhone .HEIC photos, happens inside your web browser. Your images never leave your device.

How do I compress an image to under 100KB or 50KB?

Pick one of the target size options (under 50, 100, 200 or 500 KB) or choose a custom KB target. The tool searches for the highest quality that fits under your limit, and reduces the image size slightly if it needs to. Check the final file size before you upload it.

Why do iPhone photos save as HEIC and how do I open them on Windows?

iPhones use HEIC (High Efficiency Image Container) by default. Simply drag your .heic files here to convert them into universal .jpg or .png files in seconds.

Is there a limit on how many images I can convert?

There is no daily cap, no paywall, and no watermark. You can drop dozens of images at once and export them as a single ZIP file.

🛡️ Privacy guarantee

Unlike sites that upload your documents to their servers and lock downloads behind monthly subscriptions, WeShoal runs this tool inside your browser. Your files never leave your device.