Gugu Image Compressorzip.guunn.com
Free, processed in your browser

Batch image compressor

Compress, convert, resize, and crop locally in your browser.

Gugu Image Compressor Workspace
画像をドラッグまたは選択

対応フォーマット：JPG/JPEG/PNG/WEBP/GIF/SVG/AVIF/HEIC/HEIF

Ctrl+V で画像を貼り付け、またはドラッグ＆ドロップ可能

Compress, convert, resize, and crop images in batches. Everything runs locally in your browser, so your files never reach a server.

  • No sign-up
  • Unlimited batches
  • Files stay on device
FEATURES

From raw images to ready-to-ship

More than a smaller file. Gugu Image Compressor covers the practical image workflow before publishing or delivery.

01

Smart compression

Format-aware engines for JPEG, PNG, WEBP, GIF, SVG, and AVIF.

02

Real batch processing

Add files, folders, drops, or pasted images and process them together.

03

Format conversion

Convert between JPG, PNG, WEBP, and AVIF with transparent fill control.

04

Resize and crop

Use width, height, long edge, ratios, exact dimensions, or paper presets.

05

Before-after compare

Drag the divider to inspect detail and balance file size against quality.

06

Parallel workers

Images process concurrently in the background while the interface stays responsive.

WORKFLOW

A complete batch in three steps

  1. 1

    Add images

    Choose files or folders, or simply drop and paste.

  2. 2

    Set once

    Choose quality, format, dimensions, and crop behavior.

  3. 3

    Review and download

    Inspect savings, then download files or one ZIP.

PRIVACY BY DESIGN

Local processing is faster and more private

Web Workers and WebAssembly process images in parallel on your device. There is no upload queue and no server-side copy. Close the page and the working data is gone.

  • Local processing
  • Parallel compression
  • No file retention
  • Free to use
0 files uploadedBrowser only / Web Worker / WASM

Ready to make your next batch lighter?

Free to use, no batch limits, no account required.