Are my files uploaded to a server? Is it safe?

No. Compression runs entirely inside your browser, on your own device, and your files are never sent to any server. Once loaded, it even works offline, so you can shrink confidential documents without them ever leaving your computer.

Is it really free? Do I need to sign up or install anything?

It's completely free. There is no account, no login, and no software to install. Just open this page and drag & drop your files to start.

Which file formats are supported?

PDF, PowerPoint (.pptx), Word (.docx), and Excel (.xlsx). Drop several files at once to compress them together in a single batch.

Will compression ruin the quality or layout?

Text, fonts, and layout are preserved — mainly the images are re-encoded into lighter data to reduce size. On top of that, the output is checked automatically after compression, and any file where quality loss is detected is returned unchanged, so you avoid the "it got blurry after compressing" problem. As a precaution, please review the preview before saving.

How much smaller will my file get?

It depends on the contents, but documents with many photos or screenshots often drop to less than half their size while looking virtually the same. Files that are already small may be left as-is rather than degraded.

Can it handle large files, or many files at once?

Yes. Large files and batch processing are both supported. Because everything runs on your own device, very large files may take a while. It's also handy for fitting attachments under common email limits (often 20–25 MB).

Compress PowerPoint & PDF —
right in your browser.

Free, no sign-up — your files never leave your device.

Drop files or folders here

PDF · PowerPoint · Word · Excel

Up to 100 files / 200MB per file, 1GB total (Large files? Raise the limit)

Your files are never sent anywhere. Everything happens on your device — learn more

Most of the time, what makes a document heavy is the images pasted into it. Sveltiq works by optimizing only those embedded images. So everything stays where it was — only the file gets lighter. All processing happens entirely on your device: files are never sent anywhere, so even confidential documents are safe. Drop a whole folder and everything inside gets compressed in one go.

Why Sveltiq

✓Completely free — no sign-up, no payment, every feature included
✓No account needed — open the page and start right away
✓No ads — nothing gets in your way
✓No upload (fully client-side) — your file data is never sent to a server
✓High-quality compression — optimizes only the images inside documents; text and layout stay intact while the file gets much smaller
✓Batch files & folders — compress up to 100 files at once (subfolder structure preserved). Files are processed one at a time, so memory isn't held. Up to 1GB in total and 200MB per file (raise it to 800MB per file to match your PC's memory)
✓Works offline — once loaded, it runs without a network connection
✓No usage limits — no "X times per day" caps; use it as often as you like, free
✓Protected files are respected — password-protected / encrypted files are never silently unlocked; they are returned to you untouched

For details on how your data is handled, see Security.

Disclaimer — While we do our best to keep this tool working correctly, we cannot guarantee it is free of defects. To the maximum extent permitted by applicable law, the tool is provided "AS IS" and the operator is not liable for damages or losses arising from the use of this site, except in cases of willful misconduct or gross negligence. Please review every output file before using or saving it, and always keep backups of important files. See the Terms of Service for details.

Frequently asked questions about file compression

Q. Are my files uploaded to a server? Is it safe?: A. No. Compression runs entirely inside your browser, on your own device, and your files are never sent to any server. Once loaded, it even works offline, so you can shrink confidential documents without them ever leaving your computer.
Q. Is it really free? Do I need to sign up or install anything?: A. It's completely free. There is no account, no login, and no software to install. Just open this page and drag & drop your files to start.
Q. Which file formats are supported?: A. PDF, PowerPoint (.pptx), Word (.docx), and Excel (.xlsx). Drop several files at once to compress them together in a single batch.
Q. Will compression ruin the quality or layout?: A. Text, fonts, and layout are preserved — mainly the images are re-encoded into lighter data to reduce size. On top of that, the output is checked automatically after compression, and any file where quality loss is detected is returned unchanged, so you avoid the "it got blurry after compressing" problem. As a precaution, please review the preview before saving.
Q. How much smaller will my file get?: A. It depends on the contents, but documents with many photos or screenshots often drop to less than half their size while looking virtually the same. Files that are already small may be left as-is rather than degraded.
Q. Can it handle large files, or many files at once?: A. Yes. Large files and batch processing are both supported. Because everything runs on your own device, very large files may take a while. It's also handy for fitting attachments under common email limits (often 20–25 MB).

Compress PowerPoint & PDF —right in your browser.

Why Sveltiq

Frequently asked questions about file compression

Report a problem

Compress PowerPoint & PDF —
right in your browser.