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68 tools

Free browser-based utility tools. Timers, generators, and more. Every tool runs 100% in your browser.

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All Tools

Audio Merger / Joiner — Merge Audio Files Online Free

Free, private, serverless audio merger. Combine multiple audio files into one using Web Audio API — no upload, 100% client-side.

Audio Recorder — Record from Microphone Online Free

Free, private, serverless audio recorder. Record from microphone with real-time visualizer, pause/resume, download — 100% client-side, no upload.

Avatar Generator — Create Unique Avatars Free

Free, private, serverless avatar generator. Create geometric, pixel, initials, or gradient avatars — download as PNG. 100% client-side, no data leaves your browser.

Barcode Generator

Free, private, serverless barcode generator. Create Code 128 and Code 39 barcodes from any text or numbers. Bulk generation (one per line), adjustable bar width and height, text display toggle. Download individual or all barcodes as PNG. No data leaves your browser — 100% client-side.

Business Card Maker — Free Online Card Designer with Templates

Free, private, serverless business card maker with 8 professional templates. Design, customize, and export cards as PNG or PDF — 100% in your browser.

CSS Glassmorphism Generator — Free Online Tool

Free, private, serverless CSS glassmorphism generator. Create frosted glass effects with live preview — 100% client-side.

Capacitor Charge Calculator — RC Time Constant & Energy

Free, private, serverless capacitor charge calculator. Calculate RC time constant, charge/discharge time, energy stored, voltage at any time — supports pF to F and Ω to MΩ — 100% client-side.

Certificate Generator — Free Online Certificate Maker

Free, private, serverless certificate generator. Create professional certificates with themes, custom fields, and PNG download — 100% client-side.

Clothing Size Converter — US, UK, EU & International Sizes

Free, private, serverless clothing size converter. Convert US, UK, EU sizes for men & women tops, pants, dresses — 100% client-side.

Color Contrast Checker (WCAG) — Free Online Tool

Free, private, serverless WCAG color contrast checker. Check AA and AAA compliance for text accessibility — 100% client-side.

Concrete Calculator — Volume & Bags Needed

Free concrete calculator for slabs and cylinders. Calculate volume in cubic yards/meters and bags needed — 100% client-side. 100% serverless.

Cookie Policy Generator — Free GDPR Compliant Template

Free, private, serverless cookie policy generator. Create GDPR-compliant cookie policies for your website — 100% client-side, no data leaves your browser.

Data Transfer Cost Calculator — Cloud Egress Pricing Estimator

Free, private, serverless data transfer cost calculator. Estimate cloud egress costs for AWS, GCP, Azure, Cloudflare, and more — 100% client-side.

Dice Roller — D4 to D100 with History

Free dice roller with D4, D6, D8, D10, D12, D20, D100 support. Multiple dice, modifiers, animated rolls, roll history — 100% client-side, cryptographic randomness. 100% serverless.

Disclaimer Generator — Free Legal Disclaimer Template

Free, private, serverless disclaimer generator. Create professional disclaimers for websites, blogs, and businesses — 100% client-side, no data leaves your browser.

EULA Generator — Free End User License Agreement

Free, private, serverless EULA generator. Create end user license agreements for software and apps — 100% client-side, no data leaves your browser.

Flooring Calculator — Room Area, Material & Cost Estimator

Free, private, serverless flooring calculator. Estimate room area, flooring materials, waste factor, box count, and total cost for hardwood, laminate, tile, vinyl, carpet, or bamboo — 100% client-side.

Glitch Art Generator — Free Online Image Glitch Effect Tool

Free, private, serverless online glitch art generator with 10 effects and 6 presets. Create pixel sort, RGB split, and VHS effects — 100% client-side.

Grade Calculator — Weighted Average, GPA & Final Exam Grade

Free, private, serverless grade calculator. Calculate weighted averages, GPA, letter grades, and the score you need on your final exam — 100% client-side.

Gravel & Mulch Calculator — Volume, Weight & Cost Estimator

Free, private, serverless gravel and mulch calculator. Estimate material volume in cubic yards, weight in tons, bag count, truck loads, and cost for any landscaping area — 100% client-side.

Hashtag Generator — Generate Hashtags Online Free

Free, private, serverless hashtag generator. Create relevant hashtags from keywords for social media — 100% client-side.

IP Address Converter — IPv4 Binary, Hex, Octal & Subnet Calculator

Free, private, serverless IP address converter. Convert IPv4 to binary, hexadecimal, octal; calculate CIDR subnets, masks, and host ranges — 100% client-side.

Image Collage Maker — Create Photo Collages Online Free

Free, private, serverless photo collage maker. Upload 2-12 images, choose grid layouts, customize spacing and corners — 100% client-side.

Image Flip / Mirror / Rotate — Free Online Image Transformer

Free, private, serverless image flip, mirror, and rotate tool. Flip horizontal, vertical, rotate any angle, export PNG/JPG/WebP — 100% client-side.

Invoice Generator

Free, private, serverless invoice generator. Create professional PDF invoices instantly from your browser with customizable templates, company branding, and automatic calculations. Import CSV or Excel files to bulk-generate invoices as a single merged PDF or separate files in a ZIP archive. Save and export your company settings to avoid re-entering information. Supports logo upload, multiple tax rates, discounts, and notes. No data leaves your browser — 100% client-side invoice creation.

Keyboard Tester — Test Your Keyboard Online Free

Free, private, serverless keyboard tester. Press any key to test — shows key code, history, and count. 100% client-side.

LED Resistor Calculator — Find the Right Resistor for Your LED

Free, private, serverless LED resistor calculator. Calculate the correct resistor value, power rating, and color code for LED circuits — series and parallel — 100% client-side.

MAC Address Generator — Random, Vendor OUI & Multicast

Free, private, serverless MAC address generator. Create random or vendor-specific MAC addresses in multiple formats — 100% client-side, no data sent.

Microphone Test — Test Your Mic Online Free

Free, private, serverless microphone tester. Test mic with audio visualizer, level meter, and device selection — 100% client-side.

Motivational Quote Generator — Daily Inspiration Free

Free, private, serverless motivational quote generator. Get inspiring quotes by category with beautiful card designs — share or download PNG. 100% client-side.

Mouse Tester — Test Your Mouse Online Free

Free, private, serverless mouse tester. Test mouse buttons, scroll, and movement with visual feedback — 100% client-side.

Moving Cost Estimator — Calculate Your Moving Expenses

Free, private, serverless moving cost estimator. Calculate moving expenses based on home size, distance, labor, and services — local and long distance — 100% client-side.

NDA Generator — Free Non-Disclosure Agreement

Free, private, serverless NDA generator. Create mutual or one-way non-disclosure agreements with customizable terms — 100% client-side, no data leaves your browser.

PCB Trace Width Calculator — IPC-2221 Current Capacity & Resistance

Free, private, serverless PCB trace width calculator. Calculate minimum trace width per IPC-2221, resistance, voltage drop, and power loss — 100% client-side.

PDF Compressor — Compress PDF Files Online Free

Free, private, serverless PDF compressor. Reduce PDF file size in your browser using pdf-lib — no upload, 100% client-side.

PDF Password Protect / Unlock — Free Online Tool

Free, private, serverless PDF password tool. Protect PDFs with passwords or unlock them — 100% client-side, no upload.

PDF to Text — Extract Text from PDF Online Free

Free, private, serverless PDF to text extractor. Extract text from PDFs using pdf.js — no upload, 100% client-side.

Paper Size Reference — ISO A/B/C, US Letter & Custom Sizes

Free, private, serverless paper size reference. ISO A/B/C, US Letter/Legal sizes with mm, inches, and DPI pixel conversions — 100% client-side.

Pomodoro Timer

Free, private, serverless Pomodoro timer with animated ring progress. Customizable focus, short break, and long break durations. Session tracking, sound notifications, auto-start next session, and tab title updates. No data leaves your browser — 100% client-side.

Power Factor Calculator — Real, Reactive & Apparent Power

Free, private, serverless power factor calculator. Calculate real power (kW), reactive power (kVAR), apparent power (kVA), phase angle, and correction capacitor sizing — 100% client-side.

QR Code Generator

Free, private, serverless QR code generator. Create QR codes from text, URLs, or any data instantly. Customize colors and size. Download as PNG. No data leaves your browser.

Random Color Generator — Palette Builder

Free random color generator with palette mode. Generate 1-10 colors, lock favorites, copy HEX/RGB/HSL, save palettes — 100% client-side. 100% serverless.

Random Number Generator — Free Online Tool

Free, private, serverless random number generator. Generate unique, sorted random numbers in any range — 100% client-side.

Receipt Generator — Free Online Receipt Maker

Free, private, serverless receipt generator. Create professional receipts with line items, tax, and totals — download or print. 100% client-side, no data leaves your browser.

Recipe Scaler — Scale Ingredients Up or Down Instantly

Free, private, serverless recipe scaler. Adjust servings and get instant ingredient conversions with smart fractions — 100% client-side.

Resistor Color Code Calculator — 4 & 5 Band Decoder

Free resistor color code calculator. Decode 4-band and 5-band resistors with visual preview — 100% client-side. 100% serverless.

Resume Builder — Free Online CV Creator with Templates

Free, private, serverless resume builder with 6 professional templates. Create, edit, and export your CV as PDF — 100% client-side, no data uploaded.

Ring Size Converter — US, UK, EU & Millimeter Chart

Free, private, serverless ring size converter. Convert between US, UK, EU ring sizes and millimeters — 100% client-side, no data sent.

Roofing Calculator — Roof Area, Materials & Cost Estimator

Free, private, serverless roofing calculator. Estimate roof area, shingles, roofing squares, bundles, underlayment, and total cost for gable, hip, flat, or shed roofs — 100% client-side.

SVG Optimizer — Optimize SVG Files Online Free

Free, private, serverless SVG optimizer. Remove comments, metadata, editor data, and minify SVG — 100% client-side.

Screenshot Beautifier — Free Online Screenshot Mockup Maker

Free, private, serverless online screenshot beautifier with device mockups and gradient backgrounds. Add frames, shadows, and export as PNG — 100% client-side.

Shoe Size Converter — US, UK, EU & CM Size Chart

Free, private, serverless shoe size converter. Convert between US, UK, EU sizes and centimeters for men, women & kids — 100% client-side.

Signal-to-Noise Ratio (SNR) Calculator — dB, Channel Capacity & Reference

Free, private, serverless SNR calculator. Calculate signal-to-noise ratio from power or voltage, Shannon channel capacity, and view SNR reference table — 100% client-side.

Signature Generator — Free Online Signature Maker

Free, private, serverless online signature generator. Type or draw your signature with 16 handwriting fonts, custom colors. Export PNG and SVG — 100% client-side.

Terms of Service Generator — Free ToS Template

Free, private, serverless terms of service generator. Create customized ToS agreements for websites and apps — 100% client-side, no data leaves your browser.

Typing Speed Test — Free WPM Test Online

Free, private, serverless typing speed test. Measure WPM, accuracy, and errors — 100% client-side.

Unit Price Calculator — Compare Cost Per Unit

Free unit price calculator to compare prices across different package sizes and find the best value — 100% client-side. 100% serverless.

Username Generator — Create Unique Usernames Free

Free, private, serverless username generator. Create unique, creative usernames for social media, gaming, and accounts — 100% client-side.

Video Compressor — Compress Videos Online Free

Free, private, serverless video compressor. Reduce video file size in your browser using FFmpeg.wasm — no upload, 100% client-side.

Video Resizer — Resize Videos Online Free

Free, private, serverless video resizer. Resize videos to any resolution with presets for 4K, 1080p, 720p, Instagram, TikTok — 100% client-side.

Video Thumbnail Extractor — Extract Frames from Video Free

Free, private, serverless video thumbnail extractor. Capture frames at any timestamp or auto-extract at intervals — 100% client-side, no upload.

Video Trimmer — Cut & Trim Videos Online Free

Free, private, serverless video trimmer. Trim and cut videos entirely in your browser using FFmpeg.wasm — no upload, 100% client-side.

Voltage Divider Calculator — Vout, Current & Power

Free voltage divider calculator. Calculate output voltage, current, and power dissipation — 100% client-side. 100% serverless.

Webcam Test — Test Your Camera Online Free

Free, private, serverless webcam tester. Test camera with live preview, resolution stats, and screenshot — 100% client-side.

Wire Gauge Calculator (AWG) — Size, Voltage Drop & Ampacity

Free, private, serverless wire gauge calculator. Find the right AWG wire size for current, voltage drop, and distance — copper and aluminum — single and three phase — 100% client-side.

Word Scrambler / Anagram Maker — Free Online Tool

Free, private, serverless word scrambler. Scramble letters within words or shuffle word order — 100% client-side.

Work Days Calculator — Business Days Between Dates

Free work days calculator to count business days between two dates, excluding weekends — 100% client-side. 100% serverless.

dB (Decibel) Calculator — Convert, Add & Compare Decibels

Free, private, serverless decibel calculator. Convert between ratio and dB for power and voltage, add multiple dB sources, and view SPL reference chart — 100% client-side.

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