How does StackTools protect my privacy?
StackTools processes all files in your browser. Nothing is uploaded to their servers, so your documents stay on your device.
Browser Extensions & Plugins
StackTools
Private browser tools for everyday work
- Community votes0
- DR by Ahrefs8 no change since last check
Ahrefs Domain Rating set in type 25 Oct 2026, reset 25 Oct 2026.
StackTools metrics
| Metric | Value |
|---|---|
| Domain Rating | 8 no change since last check |
| Trust Flow | 4 no change since last check |
| Citation Flow | 14 no change since last check |
| Referring domains | 4 no change since last check |
| External backlinks | 4 no change since last check |
Ahrefs Domain Rating set in type 25 Oct 2026, reset 25 Oct 2026. Lead topic: Recreation (4). Majestic set 25 Oct 2026, reset 25 Oct 2026. Link data typeset by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
StackTools domain colophon
| Domain age | 3 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | Name.com, Inc. |
| DNSSEC | Not signed |
Free browser apps for PDFs and images that process files on your device with no uploads or accounts required.
The story so far
StackTools is a family of free, privacy-first apps that run entirely in your browser. The suite includes StackPDF and StackImage, which process files on your device with no accounts or uploads required.
StackPDF provides private PDF tools for merging, splitting, compressing, converting, OCR, redacting and protecting documents. StackImage offers private image tools for compressing, converting, cropping, and enhancing images, including HEIC conversion, background removal, and on-device upscale. Both work offline after the first load.
Most online utilities require uploading sensitive files to servers. StackTools instead runs on your machine so contracts, IDs, photos, and drafts never leave your device.
Typeset features
- PDF merge, split and compress
- Convert Word, Excel, images to PDF
- OCR, redact and protect PDFs
- Compress images (JPG, PNG, WebP, AVIF)
- Convert HEIC images
- Background removal
- On-device image upscale
- Works offline after first load
- No signup required
Pricing
Pricing model: Free
Compare and explore
Questions and answers
Do I need to create an account to use StackTools?
No account is required. You can open a tool and start working immediately with no signup or credit card.
Does StackTools work offline?
After your first visit, many tools continue to work without a network connection.
Leave a review for StackTools
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StackTools has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
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