How It Works — 3 Simple Steps
Select Your File
Click to browse or drag and drop. No account or signup needed to get started.
Adjust Settings
Choose compression level or quality. Preview settings before processing.
Download Instantly
Processing happens in your browser. Download immediately — no waiting.
Why Use Nanivolt?
100% Private
All processing happens in your browser. Files never leave your device or touch our servers.
Lightning Fast
No upload time means instant processing. Results in seconds, even for large files.
No File Size Limits
Client-side processing means Pro users can compress files of any size with no restrictions.
Works Everywhere
Desktop, mobile, or tablet. Chrome, Safari, Firefox, or Edge. No app download needed.
Genuinely Free
5 files/day free, no credit card. Optional Pro for $8/month — unlimited everything.
Quality Control
Adjustable quality settings let you balance file size vs output quality for every use case.
Simple, Transparent Pricing
Free Account
- 10 files per day
- 25MB max file size
- All 4 tools
- 7-day file history
More Free Tools
Frequently Asked Questions
Is this PDF compressor free?
Yes — completely free for up to 5 files per day with no signup. Create a free account for 10 files/day, or upgrade to Pro ($8/month) for unlimited compression.
Do my PDF files get uploaded to a server?
No. All compression happens entirely in your browser. Your files never leave your device, ensuring complete privacy.
How much can I compress a PDF?
Depending on the compression level: High Quality (30–40% smaller), Balanced (50–60% smaller), Maximum (up to 90% smaller).
Is there a file size limit?
Free users can compress files up to 25MB. Pro users ($8/month) have no file size limits.
Will compression affect PDF quality?
High Quality and Balanced modes keep text and images crisp. Maximum mode reduces embedded image quality slightly but text remains readable.