Every file tool you need, quietly in your browser.
Merge PDFs, convert images and video, run GST and EMI calculators, and build invoices in the browser. Free core tools, no watermark, no account. Local tools never upload your files. See for yourself
A place for every task
- PDF StudioMerge, split, sign, protect and convert PDFs without uploading them.49 tools
- Image LabConvert, shrink, crop and clean up photos right on your device.19 tools
- Video & AudioTrim, compress, convert and caption clips with ffmpeg running in this tab.31 tools
- Money & MathSalary, tax, GST, loans and everyday sums, worked out privately.19 tools
- ToolboxCheck what a file really is, hit a size limit, and share safely.15 tools
Your files stay with you
- Processing happens in your browser, on your device.
- No account, no sign-up, nothing to install.
- Once loaded, local tools keep working offline.
Frequently asked questions
Do my files ever leave my device?
Local PDF, image, video, audio, GST, and calculator tools process entirely in your browser. File bytes and calculator inputs are not uploaded. Some tools download a processing model or asset on first use, which never includes your file.
Is an account required?
No. Every tool works without an account, and this build has no sign-in at all. You open a tool, add your file and download the result. There is nothing to register, no email to give and no profile that remembers what you worked on.
Can I use the app offline?
Local tools can work offline after their pages, processing code, and required assets have been cached. Load the tool and download any required OCR or video assets before disconnecting. Cloud AI and remote MCP features still need an internet connection.
Does this cover both PDF work and everyday file conversion?
Yes. The same app merges, splits, compresses, and signs PDFs, and converts images, video, and audio. Each tool page states accepted formats, where processing happens, and honest limitations.
Are the GST, EMI, and tax calculators private?
Yes. GST, EMI, SIP, income-tax sketch, salary, and everyday math calculators run in your browser. Nothing is uploaded. Tax tools are illustrative sketches, not government filings.
How does the GST invoice calculator work?
You enter seller, buyer, and line items. Same-state supplies split GST into CGST and SGST; interstate supplies apply IGST. Totals round to paise. GSTIN checks are format-only. The tool does not register invoices with the government IRP.
Is there a watermark or paid upgrade to download?
No. Core local tools are free, add no product watermark, and download from your device. Future pricing would be disclosed on the pricing page before it changes in the product.
How can I check that my files are not uploaded?
Open your browser developer tools, switch to the Network tab, then run any local tool on a file. You will see no request carrying your file. The /prove page does this check for you and shows what left your device while a conversion runs. Pages and code still load normally.
Is there a file-size limit, and which browsers work?
There is no fixed cap. The practical limit is your device memory, because the work happens locally. Current Chrome, Edge, Firefox and Safari all work. Safari on iPhone and iPad has stricter memory limits, so very large PDFs or videos may fail there and run better on a computer.
Which tools are not available yet?
Automatic subtitle generation is unavailable. The two peer-to-peer tools, file sharing and the shared whiteboard, are same-device demos that connect browser tabs on one device, not people on other devices. Each tool page states what it does and does not do before you start.
Which languages are supported?
You can choose from 40 interface languages. Ten of them have fully translated tool guides: English, Hindi, Spanish, Brazilian Portuguese, French, German, Italian, Arabic, Japanese and Indonesian. In other languages some guide text may appear in English until it is translated.