Yes. Compression uses the Canvas API and Web Workers inside your browser. Nothing leaves your device. Check the Network tab in DevTools to verify.

What happens with PNG files?

PNG is lossless, so quality-based compression doesn't work. PNGs are internally compressed as WebP to hit the target size, then saved with the original .png extension.

What if my file ends up smaller than the max size I set?

The max size is an upper limit, not an exact target. The compressor reduces quality until the file fits under that limit, so results are often well below it. If the file is already smaller, it's returned as-is.

How many files can I compress at once?

Up to 20 images, max 20MB each. Three compress concurrently to balance speed and memory.

Does it work on mobile?

Yes. Tap the upload area to pick images. Compression runs in the background.

Terms of Service | ImageCompressor

Last updated: March 19, 2026

Introduction

Welcome to CompressLocal.com ("the Site"). By accessing or using the Site, you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, please do not use the Site.

Description of Service

CompressLocal.com provides free browser-based image and PDF tools, including image compression, format conversion, resizing, image-to-PDF conversion, and PDF compression. No account or registration is required.

All file processing occurs entirely within your browser using the Canvas API, Web Workers, and WebAssembly. No image or PDF data is transmitted to any server at any time. The Site operator has no access to, and no ability to recover, any files you process.

No data retention

We do not create user accounts. We do not store, retain, or have access to any files you process. All data exists only in your browser's memory and is discarded when you close or navigate away from the page. If you close the tab before downloading your processed files, they cannot be recovered.

No warranty / as-is

The tools on this Site are provided "as is" and "as available" without warranties of any kind, whether express or implied. We do not guarantee the accuracy, reliability, or quality of any output produced by the tools.

Compressed output may differ in visual quality, color fidelity, or file structure from the original.
EXIF metadata (including GPS location and camera information) is intentionally stripped during processing as a privacy feature.
PDF compression may alter the rendering of embedded images while preserving text and vector elements.
Always retain your original files before using any compression or conversion tool.

The Site incorporates open-source software components (including browser-image-compression, fflate, pdf-lib, and Ghostscript WASM) which are provided as-is under their respective licenses.

Browser compatibility

The tools depend on modern browser capabilities including the Canvas API, Web Workers, and WebAssembly. Functionality is not guaranteed across all browsers, devices, or operating systems. For the best experience, use a current version of Chrome, Firefox, Safari, or Edge.

Limitation of liability

To the fullest extent permitted by law, CompressLocal.com and its operators shall not be liable for any direct, indirect, incidental, consequential, or special damages arising from your use of the Site or its tools. This includes, without limitation, damages for data loss, quality degradation, or inability to recover processed files.

Because all processing occurs locally on your device, we have no control over the processing environment, available memory, or browser behavior that may affect results.

Intellectual property

You retain full ownership of any images or files you process using the tools. We make no claim to your content. The Site's code, design, branding, and written content are owned by CompressLocal.com and may not be reproduced without permission.

Acceptable use

You agree not to use the Site to:

Process illegal content or content that violates the rights of others
Attempt to reverse-engineer, decompile, or extract the source code
Automate access to the Site in a way that degrades performance for other users
Circumvent any technical measures or security features

Third-party services

The Site uses the following third-party services:

Google AdSense — Displays advertisements and may set cookies for ad personalization. Google's use of advertising cookies is governed by Google's Privacy Policy.
Google Fonts — Serves the Geist font. Google may collect standard request data when delivering font files.

Cookies and tracking

The image and PDF processing tools on this Site involve zero tracking — no cookies, no analytics, no network requests. However, Google AdSense may set cookies for advertising personalization. These advertising cookies are entirely separate from the tool functionality. For full details, see our Privacy Policy. You can opt out of personalized advertising at Google Ads Settings.

Your rights (GDPR / CCPA)

Because all file processing is local, we never receive or store your images — there is no personal image data for us to access, delete, or transfer. However, third-party advertising services (Google AdSense) may collect data subject to privacy regulations:

GDPR (EU residents) — You have the right to access, rectify, or delete personal data collected by Google through advertising cookies. Exercise these rights through Google's Data & Privacy settings.
CCPA (California residents) — You have the right to opt out of the sale or sharing of personal information. Google AdSense may share data for advertising purposes. Opt out through Google Ads Settings.

Modifications

We reserve the right to update these Terms at any time. Changes will be posted on this page with a revised date. Your continued use of the Site after changes are posted constitutes acceptance of the updated Terms.

Contact

Questions about these Terms? Visit our Contact page.