Introduction:

Your images contain pixel grids that determine quality, file size, and display speed. Resizing changes those grids, helping pages load faster and conserving storage without changing visual intent.

This utility lets you shrink, enlarge, or convert pictures directly in the browser. You drag files onto the interface, choose dimensions or percentage, and get immediate previews before downloading.

Use it when preparing product shots for an online shop or trimming screenshots for email attachments. Large upscales may soften detail, so review output before sharing.

Technical Details:

The page runs entirely client‑side with an efficient resampling engine and in‑memory ZIP bundler. It reads pixels, applies high‑quality interpolation, and streams results to instant object URLs. No images leave your device, protecting privacy even on poor connections.

Feature Breakdown

Drag‑and‑Drop Intake

Drop multiple files onto the dashed zone; thumbnails appear instantly. Example: toss six RAW exports at once. Caution: unsupported formats are silently ignored.

Percentage Scaling

Slide the “Scale” range to 50 % to halve dimensions equally. Example: reduce 4000 px photos to 2000 px. Caution: values under 10 % may remove readability.

Exact Dimension Control

Enter width or height boxes for precise output, keeping aspect if desired. Example: fix width at 1200 px for blog banners. Caution: disabling ratio can distort images.

Format Conversion

Choose JPEG, PNG, or WebP from the list; files convert during resize. Example: turn transparent PNGs into smaller WebP. Caution: lossy formats may alter color subtly.

Batch ZIP Export

Click “Download ZIP” after processing to collect all resized files. Example: one archive for a client hand‑off. Caution: single huge archives can strain older browsers.

Step‑by‑Step Guide:

Click or drag files onto Drag & drop images.
Adjust the Scale slider or type values in Width/Height.
Open Advanced, pick Format, and toggle Maintain aspect ratio if required.
Press Resize All; a progress badge shows each status.
Review previews, then hit Download ZIP or individual Download links.

FAQ:

Is my data stored?

No. Processing occurs locally; nothing uploads or persists after you close the tab.

Why is my preview blank?

The file might use an unsupported codec. Convert it offline first, then retry.

How big can files be?

Browsers comfortably handle images up to 30 MB each. Larger files may exhaust memory.

Does resizing reduce quality?

Downscaling keeps sharpness; upscaling can blur pixels. Always inspect results before publishing.

Can I resize GIFs?

Animated GIFs are treated as static frames. Motion is lost after conversion.

Troubleshooting:

Nothing happens after clicking “Resize All”: refresh the page and re‑add files.
Download link shows “Pending”: wait until the spinner in the list stops.
ZIP archive is corrupt: clear browser cache, then regenerate the ZIP.
Image looks washed‑out: switch to PNG format to avoid compression artifacts.
Aspect ratio incorrect: ensure Maintain aspect ratio is checked before resizing.

Advanced Tips:

Set width only; the tool auto‑calculates height for proportional scaling.
Use 75 % JPEG quality for a balance between clarity and size.
Keep original names short to improve ZIP extraction compatibility.
Chain multiple sessions to bypass browser memory limits for hundreds of images.
Preview color profiles on a calibrated monitor before final delivery.

Glossary:

Pixel: Single picture element representing color information.
Aspect Ratio: Width divided by height; keeps shapes proportional.
Lossy Compression: Method that removes data to shrink file size.
Blob: Binary large object used for in‑memory file storage.
Batch Processing: Handling many files through one repeated action.

Image Resizer

Total Output Size