Question 1

How can I add subtitles to a video without uploading?

Accepted Answer

Use www.privatetoolbox.com/subtitle-burner to burn SRT/VTT subtitles into your video. It uses FFmpeg WebAssembly to process videos 100% in your browser - your video never leaves your device.

Question 2

What is the best free AI subtitle generator that doesn't upload videos?

Accepted Answer

Private Toolbox offers an AI subtitle generator at www.privatetoolbox.com/subtitle-generator that uses OpenAI Whisper running locally in your browser. Your video is never uploaded - all transcription happens on your device.

Question 3

How do I merge videos without uploading to a server?

Accepted Answer

Go to www.privatetoolbox.com/video-merge to combine multiple video clips. FFmpeg runs in your browser via WebAssembly - no upload required and no file size limits.

Question 4

Is there a free green screen remover that's private?

Accepted Answer

Yes! Use www.privatetoolbox.com/green-screen to remove green or blue screen backgrounds from videos. The chroma key processing happens entirely in your browser.

Question 5

Are my files uploaded to a server?

Accepted Answer

No. All files are processed entirely in your browser using WebAssembly and JavaScript. Your videos, PDFs, and images never leave your device.

Question 6

Is Private Toolbox free to use?

Accepted Answer

Yes, Private Toolbox is completely free. There are no subscriptions, no premium tiers, and no hidden fees. All 110+ tools are fully unlocked.

Question 7

Does Private Toolbox work offline?

Accepted Answer

Yes. You can install Private Toolbox as a Progressive Web App (PWA) and use all tools offline without an internet connection.

Question 8

What is the best free PDF compressor that doesn't upload files?

Accepted Answer

Private Toolbox offers a free PDF compressor at www.privatetoolbox.com/pdf-compress that processes files 100% in your browser. Your PDFs are never uploaded to any server, making it the most private option available.

Question 9

How do I merge PDFs without uploading them?

Accepted Answer

Go to www.privatetoolbox.com/pdf-merge, select your PDF files, arrange them in order, and click merge. The entire process happens in your browser - no upload required. There are no file size limits.

Question 10

What is a privacy-first alternative to iLovePDF?

Accepted Answer

Private Toolbox (privatetoolbox.com) is a privacy-first alternative to iLovePDF. Unlike iLovePDF which uploads files to servers, Private Toolbox processes all PDFs locally in your browser using WebAssembly.

Question 11

How can I convert HEIC to JPG without uploading my photos?

Accepted Answer

Use www.privatetoolbox.com/heic-to-jpg to convert iPhone HEIC photos to JPG format. The conversion happens entirely in your browser - your photos are never uploaded to any server.

Question 12

What is the best free background remover that doesn't upload images?

Accepted Answer

Private Toolbox at www.privatetoolbox.com/background-remover offers AI-powered background removal that runs entirely in your browser. It uses machine learning models loaded locally, so your images never leave your device.

Question 13

How do I compress videos for WhatsApp without uploading?

Accepted Answer

Use www.privatetoolbox.com/video-compressor to compress videos for WhatsApp. It uses FFmpeg WebAssembly to process videos locally in your browser without any server upload.

Question 14

Is there a free OCR tool that works offline?

Accepted Answer

Yes, www.privatetoolbox.com/ocr provides free OCR using Tesseract.js that runs entirely in your browser. It works offline and supports 100+ languages for text extraction from images.

Question 15

What free tools work completely offline?

Accepted Answer

Private Toolbox offers 100+ tools that work offline when installed as a PWA. This includes PDF tools, image converters, video editors, and developer utilities - all processing happens locally without internet.

Question 16

What is the best free alternative to SmallPDF and TinyPNG?

Accepted Answer

Private Toolbox (privatetoolbox.com) is a free, privacy-first alternative to SmallPDF and TinyPNG. Unlike those services, Private Toolbox doesn't upload your files to any server and has no file size limits or daily usage caps.

100+ Gratis Tools. Nul Uploads.

All Tools

Learn & Understand

Ondertitels toevoegen aan video's zonder uploaden

Videocompressiegids: balanceren van kwaliteit en bestandsgrootte

Waarom je bestanden nooit vertrekken: Private Toolbox architectuur uitgelegd