# Noderail — Free Online Tools

> Noderail (https://noderail.io) is a suite of free online tools — converters, calculators and generators — that run entirely in the browser: no sign-up, no uploads, no watermarks, no limits. A new tool ships every day.

All tools process data client-side whenever technically possible, so user files never leave the device.

## Calculators
- [BMI Calculator](https://noderail.io/tools/bmi-calculator/): Calculate your BMI instantly. Free body mass index calculator with metric & imperial units, WHO chart and healthy weight range. Check your BMI now.
- [Car Loan Calculator with Extra Payments & Amortization](https://noderail.io/tools/car-loan-calculator/): Free car loan calculator with extra payments, trade-in, sales tax and a full amortization schedule. Get your monthly payment, payoff date and interest saved.
- [Mortgage Calculator with Extra Payments & Amortization](https://noderail.io/tools/mortgage-calculator/): Free mortgage calculator with extra payments, PMI, taxes and a full amortization schedule. See your payoff date and interest saved — instant, no sign-up.

## Generators
- [Free QR Code Generator](https://noderail.io/tools/qr-code/): Create free QR codes online for URLs, Wi-Fi, vCards & more. Custom colors, PNG & SVG download, no sign-up, codes never expire. Generate yours in seconds.
- [WiFi QR Code Generator](https://noderail.io/tools/wifi-qr-code/): Create a free WiFi QR code so guests connect by scanning — no typing the password. Print a guest card, download PNG or SVG. No sign-up, runs in your browser.
- [vCard QR Code Generator](https://noderail.io/tools/vcard-qr-code/): Create a free vCard QR code that saves your name, phone, email & company to a phone in one scan. Download PNG, SVG or .vcf — no sign-up, never expires.

## Hardware
- [Dead Pixel Test](https://noderail.io/tools/dead-pixel-test/): Free full-screen dead & stuck pixel test — cycle red, green, blue, white & black to spot defects on any monitor, laptop or phone. Stuck-pixel fixer included.
- [Gamepad Tester](https://noderail.io/tools/gamepad-tester/): Free online gamepad tester for PS5, PS4, Xbox and PC controllers. Check every button, run a stick drift test and try vibration — right in your browser.
- [Keyboard Tester Online](https://noderail.io/tools/keyboard-tester/): Free online keyboard tester: press any key to check it works, find stuck or dead keys, and run a key rollover (NKRO) and ghosting test. No download.
- [Mic Test](https://noderail.io/tools/mic-test/): Free mic test online: live volume meter and waveform, hear yourself through headphones, record a clip and play it back. 100% in your browser — no upload.
- [Mouse Tester](https://noderail.io/tools/mouse-tester/): Free online mouse tester: check for double-click faults, test left, right, middle & side buttons, scroll wheel and run a CPS test. Spot switch wear instantly.
- [Webcam Test](https://noderail.io/tools/webcam-test/): Free online webcam test: live preview, resolution & FPS check, mirror flip, snapshot and video recording. Runs 100% in your browser — nothing is uploaded.

## Image
- [Compress Image to 50KB / 100KB](https://noderail.io/tools/compress-image/): Compress an image to an exact size — 20KB, 50KB, 100KB, 200KB or any KB. Free in-browser JPG/WebP compressor, batch + ZIP, no upload, no limit, no watermark.
- [Crop Image Online](https://noderail.io/tools/crop-image/): Crop images online free with exact social-media presets (Instagram, YouTube, Facebook). Drag to crop, lock any aspect ratio, no upload — photos stay in your browser.
- [HEIC to JPG Converter](https://noderail.io/tools/heic-to-jpg/): Convert HEIC to JPG online free. Batch convert iPhone photos right in your browser — no upload, no sign-up, full quality. Drop your HEIC files now.
- [Passport Photo 35x45 mm Online Free](https://noderail.io/tools/passport-photo-35x45/): Make a 35x45 mm passport photo online free — UK, Schengen, India. Head & eye guides, 413x531 px JPG + printable sheet. Photos never leave your browser.
- [Passport Photo Maker](https://noderail.io/tools/passport-photo/): Make a 2x2 US passport photo online free. Crop with head & eye guides, download a 600x600 JPG or a printable 4x6 sheet. Photos never leave your browser.
- [Photo 3x4 cm Maker](https://noderail.io/tools/photo-3x4/): Make a 3x4 cm document & visa photo online free. Crop to 30x40 mm or 3.5x4.5 cm, 300 DPI JPG + printable sheet. Photos never leave your browser.

## PDF
- [Compress PDF to 100KB Online](https://noderail.io/tools/compress-pdf/): Compress PDF to 100KB, 200KB or any exact size free — right in your browser, no upload, no watermark, no sign-up. Hit a target file size and download instantly.
- [JPG to PDF Converter Online Free](https://noderail.io/tools/jpg-to-pdf/): Convert JPG, PNG or WebP images to one PDF free — merge photos, set page size, margins and a target file size like 200 KB. No upload, no watermark.
- [Merge PDF Files Online Free](https://noderail.io/tools/merge-pdf/): Merge PDF files into one for free — no size limit, no watermark, no sign-up. Reorder and combine PDFs right in your browser; files never leave your device.
- [PDF to JPG Converter Online Free](https://noderail.io/tools/pdf-to-jpg/): Convert PDF to JPG or PNG free — high quality up to 300 DPI, no upload, no watermark. Pick pages, set a target size and download images in your browser.
- [Password Protect PDF Online Free](https://noderail.io/tools/protect-pdf/): Password protect a PDF online free with real AES-256 encryption. Your file and password never leave your browser — no upload, no sign-up, no watermark.
- [Sign PDF Online Free](https://noderail.io/tools/sign-pdf/): Sign a PDF online free with no sign-up: draw, type or upload your signature, place it on any page and download instantly. Files never leave your browser.
- [Split PDF Online Free](https://noderail.io/tools/split-pdf/): Split a PDF online free — extract pages into a new PDF or split into separate files. No upload, no limits, no watermark; files never leave your browser.
- [Unlock PDF Online Free](https://noderail.io/tools/unlock-pdf/): Unlock a PDF online free — remove the open password or print/copy restrictions right in your browser. No upload, no sign-up, no limits, no watermark.

## Video & Audio
- [Compress Video Online Free](https://noderail.io/tools/video-compressor/): Compress video files online free — right in your browser. No upload, no watermark, no size limits. Reduce MP4 size for Discord, WhatsApp & email.
- [MP4 to MP3 Converter Online Free](https://noderail.io/tools/mp4-to-mp3/): Convert MP4 to MP3 online free — extract audio right in your browser. No upload, no watermark, no limits. Choose the bitrate and download your MP3 instantly.
- [Video Trimmer Online Free](https://noderail.io/tools/video-trimmer/): Trim and cut video online free, right in your browser. No upload, no watermark, no sign-up, no size limit. Lossless or precise — download instantly.

## Facts
- Free forever: no accounts, no paywalls, no watermarks
- Privacy-first: processing happens in the user's browser, files never leave the device
- Available in English, Spanish, German, French and Russian (/<lang>/tools/<slug>/)
- A new tool ships every day