Disclaimer
FileShrinking provides free, browser-based compression tools as a convenience. This page explains the limits of those tools, the results you can realistically expect, and the responsibilities that remain yours.
Last updated June 27, 2026
General information only
The information, tools, and content on FileShrinking (the “Service”) are provided for general informational and practical use only. We work hard to keep everything accurate and useful, but we make no warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability, or availability of the Service or its results. Your use of the Service is entirely at your own risk. This disclaimer should be read together with our Terms of Service, which governs your use of the site.
How our tools actually work
Every compressor on FileShrinking runs entirely inside your web browser. Your images, PDFs, videos, and audio files are read into your device’s memory, processed locally with WebAssembly, and handed straight back to you. Your files are never uploaded to us, transmitted over the network, or stored on any server. Because all the work happens on your own hardware, the speed, quality, and even whether a given file can be processed at all depend on your device, browser, available memory, and the file you provide. For details on the limited data the site itself handles, see our Privacy Policy and Cookie Policy.
No guarantee of results
Compression is not magic, and we cannot promise a specific outcome. Most image, video, and audio compression is lossy, which means it permanently discards some data to make files smaller. We do not guarantee any particular compression ratio, file size, output quality, or perfect fidelity to your original. How much a file shrinks and how it looks or sounds afterward depend on the content itself, the format, the settings you choose, and how well the original was already optimized. A photo straight from a camera may shrink dramatically, while an already-optimized file may barely change — or, in some cases, a re-encoded file could even be larger than the original.
Real limits you should know about
Different file types behave very differently, and some have hard practical limits that no in-browser tool can overcome:
| File type | What to expect |
|---|---|
| Images (JPEG, PNG, WebP, AVIF, GIF) | Usually compress well, but savings vary. Already-optimized images may shrink little or not at all. |
| PDFs | Our PDF tool reduces size mainly by recompressing embedded images. PDFs made of text and vector graphics may shrink very little or not at all, because there are no large images to optimize. |
| Video | Browser-based video compression is single-threaded and CPU-intensive. It can be slow, and very large files may fail outright on low-memory devices or older browsers. |
| Audio | Lossy re-encoding can reduce size, but re-compressing an already-compressed file (such as a low-bitrate MP3) yields little benefit and can reduce quality. |
If a tool stalls, runs out of memory, or fails on a large file, that is a limitation of running heavy processing in a browser tab — not a defect you should rely on us to fix for any specific file. Trying a smaller file, a different browser, a more powerful device, or closing other tabs often helps.
Always keep your original files
This is the single most important point on this page. Always keep a safe, unmodified copy of every original file before you compress it. Compression can be cumulative and irreversible: once detail is discarded, it cannot be recovered from the compressed output. Treat the compressed file as a new, separate copy — never your only copy.
- Keep masters of important photos, documents, and recordings backed up before processing.
- Re-compress from your highest-quality original, not from a file that has already been compressed.
- Verify that a compressed file opens correctly and looks or sounds acceptable before you delete the original.
No responsibility for data loss
To the fullest extent permitted by law, FileShrinking is not responsible or liable for any loss, corruption, or damage to your files or data, or for any other direct, indirect, incidental, or consequential loss arising from your use of (or inability to use) the Service. This includes browser crashes, device errors, interrupted processing, unexpected output, or deleting an original before you confirmed the result. Because everything runs locally on your device, we have no access to your files and no ability to recover them. The responsibility for backing up and verifying your data is yours alone.
External links and advertising
The Service may contain links to third-party websites and displays advertising provided by Google AdSense. These links and ads are offered for convenience and to support the free running of the site. We do not control, endorse, guarantee, or take responsibility for the content, products, services, accuracy, or practices of any third-party site or advertiser. A link or an advertisement is not an endorsement. Any dealings you have with a third party are solely between you and that party. Advertising and analytics cookies are loaded only after you give consent; you can read how we handle this in our Cookie Policy and Privacy Policy.
Not professional advice
Nothing on FileShrinking constitutes legal, technical, financial, or other professional advice. Guides, FAQs, and explanations about file formats and compression are general educational content and may not apply to your specific situation. If you need to meet a particular technical specification, archival standard, or legal or regulatory requirement — for example for court filings, medical imaging, or professional print — consult a qualified professional rather than relying on these tools or articles.
Availability and changes
We provide the Service on an “as is” and “as available” basis. We may change, suspend, or discontinue any tool or feature at any time without notice, and we do not guarantee that the Service will be uninterrupted, error-free, or compatible with every device or browser. We may update this disclaimer from time to time; the “Last updated” date above reflects the most recent change, and your continued use of the Service means you accept the current version.
Contact us
If you have any questions about this disclaimer, you are welcome to email us at hello@fileshrinking.com.