Drop one or many JPG, PNG or WebP images, set the quality and a maximum width or height, and download smaller copies one by one or as a ZIP. Compression runs in your browser with the canvas API, so your photos aren’t uploaded. Need an exact size like 50 KB? Use the fixed-target pages below.
Drag & Drop Images Here or Click to Select
EXIF data (camera details, GPS location) is always removed.
Preset targets for exam, job and visa forms.
Quick answer
To compress an image, re-encode it at a lower quality or smaller size to cut its file weight. This tool does it entirely in your browser, so your JPG, PNG, or WebP photos are never uploaded to a server.
Last updated: July 2026 · Free · Runs entirely in your browser
Drag in a JPG, PNG, or WebP, choose the quality you want, and download the smaller file. It takes a couple of seconds and runs entirely in your browser, so nothing is uploaded and your original stays on your device.
Images are usually the heaviest thing on a web page, and heavy pages load slowly. A page that loads in about one second holds far more visitors than one that takes five, and every extra second costs you conversions. Compressing also helps you beat email attachment limits, save storage, and upload faster to marketplaces and social platforms.
Many online compressors upload your photos to their servers. This one does not. Everything happens locally in your browser, so your images never leave your device. That matters for personal photos, client work, and anything confidential.
Need a different file type instead of a smaller one? Use the image format converter, or read why speed matters in your images are quietly killing your sales. Browse all free tools.
It is free, needs no account, keeps your files private, and lets you decide the balance between size and quality. No watermarks, no upload, no catch.
Sharing these photos? Check what they reveal first with the EXIF viewer and remover. Photos often carry the GPS coordinates of where they were taken.
Client-side image compression utilizes modern browser-native graphics APIs—including HTMLCanvasElement, OffscreenCanvas, and createImageBitmap()—to downscale, resample, and re-encode high-resolution images directly in hardware memory. By avoiding cloud server uploads, users gain instant processing speed while retaining complete confidentiality over sensitive documents, contracts, and private photographs. For web publishers, aggressive image payload optimization is the single highest-leverage lever to pass Google Core Web Vitals Largest Contentful Paint (LCP) audits.
In modern web performance engineering, images account for over 60% of total downloaded bytes on average web pages. When a visitor loads a page, the browser's rendering engine must fetch, decode, and paint the hero media element. Google's search algorithms quantify this via Largest Contentful Paint (LCP):
Understanding the physics of image compression ensures the correct balance between visual clarity and file size reduction:
| Format | Compression Algorithm | Transparency (Alpha) | Typical Size Reduction | Primary Production Use Case |
|---|---|---|---|---|
| WebP | VP8 intra-frame predictive coding | Yes (Lossy & Lossless) | Usually smaller than JPEG (25–34% on average in Google’s study) | Modern responsive web pages, blog heroes, e-commerce |
| JPEG / JPG | Discrete Cosine Transform (DCT) | No | Baseline | Universal legacy compatibility, camera photography |
| PNG | 2D predictive filter + DEFLATE | Yes (8-bit / 24-bit) | Lossless; best for screenshots and graphics | UI screenshots, diagrams, transparent graphics |
| AVIF | AV1 keyframe compression | Yes | Newer format; check support before using it | Next-gen cutting-edge web delivery (high CPU encode) |
Traditional "online image compressor" services upload your files to their private cloud servers where images may be cached on disk, subjected to machine learning training, or vulnerable to server breach. BeginThings operates differently:
FileReader or URL.createObjectURL().URL.revokeObjectURL(), purging all pixel data from browser memory.No. All compression, resizing, and format conversions occur 100% locally inside your web browser using HTML5 Canvas APIs. Your files never leave your computer or smartphone.
Start at about 80% (0.8, this tool’s default) and lower it only until you can see a difference. How much smaller the file gets depends on the original. A large camera photo often shrinks by more than half, but an image that’s already compressed may barely change. Lowering Max Dimension (for example to 1600 or 1920 px) usually saves far more than lowering quality.
For websites, WebP usually gives smaller files at similar quality. In Google’s WebP compression study, WebP files were on average 25–34% smaller than JPEGs of the same SSIM quality score, and results vary by image. This compressor saves JPEG, which every portal and app accepts. To make a WebP, use image format converter.
Lower the quality slider (for example to 60–70%), compress, and check the new file size shown. If the file is still above the limit, lower Max Dimension to 1200 or 1600 px, which usually saves far more. For an exact limit, use the fixed-target pages for 20, 50, 100 or 200 KB.
Yes. When an image is rendered onto an HTML5 Canvas and re-encoded, EXIF metadata—including GPS coordinates, camera serial numbers, and capture timestamps—is automatically stripped, protecting your personal privacy when sharing images online.
Yes. Drop several images together, then download them one by one or all at once as a ZIP file.
Yes. The Max Dimension slider caps the longest side (1920 px by default), which often saves more bytes than lowering quality.
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