ZIP extractor and creator
Open ZIP archives or bundle files into a ZIP privately in your browser.
Free web browser tools
Offline
Browse Offline tools that run in your browser.
QR code reader
Read a QR code from an image or your camera without uploading it.
Photo collage maker
Arrange photos in a grid with custom spacing, background, and dimensions.
Merge videos
Join video clips in your chosen order, entirely on your device.
Mute video / remove audio
Remove a video’s soundtrack locally and download a silent video.
Crop and rotate video
Rotate video and crop it to exact dimensions in your browser.
PDF to Excel / CSV
Extract text-based PDF tables into editable rows and download Excel or CSV.
Redact PDF
Mark sensitive areas and export a PDF with the covered content removed.
Image upscaler
Enlarge an image by 2×, 3×, or 4× using local high-quality resizing.
Webcam and microphone tester
Preview your webcam and check microphone levels privately on your device.
Subtitle converter and editor
Edit SRT or VTT subtitles, shift timings, and convert between formats locally.
Recipe scaler
Scale ingredient quantities from the original servings to your chosen servings.
Fuel cost calculator
Estimate trip fuel usage and cost from distance, efficiency, and fuel price.
Electricity cost calculator
Estimate appliance running costs using watts, hours, and your electricity tariff.
Aspect ratio calculator
Simplify aspect ratios and calculate matching image or video dimensions.
Keyboard tester
Test keyboard keys, modifiers, and simultaneous presses with a live keyboard display. Key presses stay on your device.
Offline FAQs
How are tags used on ReallyUseful.Tools?
Tags group tools by shared traits such as file converter, in browser, or privacy friendly so you can filter the directory by feature.