Tools that
do one thing.
A workbench of small, single-purpose tools for builders. Each one runs in a browser tab, needs zero setup, and does exactly what its name says. No upsell, no paywall, no “let’s jump on a call”.
Repodle — Guess today’s trending GitHub repo. 6 tries, daily, shareable.
A daily puzzle built on live data: one repo from today’s GitHub trending list, six guesses, a new clue per miss. Same puzzle for everyone, emoji grid to share, resets at 00:00 UTC.
Image Compressor
Squash PNG/JPG/WebP in-browser with quality control.
Image Resizer
Resize to fixed dimensions or max pixels. EXIF stripped.
Image Converter
PNG ↔ JPG ↔ WebP ↔ AVIF. No upload, no watermark.
HEIC to JPG
iPhone photos to JPG in one drop. Batch friendly.
Image Cropper
Crop with aspect presets. Round, square, OG-image.
Screenshot Beautify
Drop a screenshot, frame it with gradient, shadow, padding.
EXIF Viewer
View hidden camera, lens & GPS metadata in any photo, then remove it before you share.
Photo Timestamp
Stamp a digital date/time on your photos from EXIF or file date, then export as ZIP.
Carousel Split
Split one photo into a seamless Instagram carousel or 3x3 grid — free, in-browser, no upload.
Watermark
Add a text or logo watermark — tiled anti-theft or single branded mark, batch export to ZIP.
Print & Passport Photo
Passport photo maker + resize to 4x6/5x7/8x10 at 300 DPI — free, no upload.
Vintage Filter
Dazz Cam / OldRoll style vintage filters — 11 presets incl. CPM35, D Classic, NT16 looks.
Duplicate Photo Finder
Find duplicate & near-duplicate photos with perceptual hashing — nothing is uploaded.
Long Press Image
The viral X trick — brushed areas vanish in the feed and reveal on long press.
Photo Measure
Set a scale from something of known length, then label real distances and areas on a photo.
Normal Map Generator
Image to normal, height, AO & specular maps — OpenGL/DirectX green channel, seamless tiling.
Dot Art Generator
Halftone pop-art screens from any photo — rotated grid, three dot shapes, PNG + vector SVG.
App Icon Generator
One square image to every iOS, Android and PWA size — Xcode appiconset + mipmaps in one ZIP.
Photo Censor
Pixelate or blur faces, plates and docs — drag boxes, download a PNG, nothing uploaded.
Video Compressor
H.264 re-encode with target size. Runs via ffmpeg.wasm.
Video to GIF
Trim, scale, export a loopable GIF — all local.
Audio Compressor
Shrink MP3/AAC/OGG without killing clarity.
Media Converter
One tool, dozens of format pairs. No queueing.
Audio Extractor
Pull clean MP3/WAV audio from any video.
Voice Recorder
Record mic with live waveform. Mono 16k/24k WAV + metadata.
Video Trimmer
Cut a clip by timecode — fast keyframe copy or frame-accurate re-encode. Runs via ffmpeg.wasm.
Add Music to Video
Add or swap a soundtrack on any video, lossless and in-browser.
Slideshow Maker
Turn photos into an MP4 slideshow with transitions and music, right in your browser.
Photo Booth
Classic 4-shot webcam photo strip with filters — free, in-browser, no upload.
Audio Trimmer
Cut MP3/WAV on a waveform with drag handles, fades, and lossless MP3 copy export.
Tone Generator
20 Hz–20 kHz tones, L/R speaker test, and a 165 Hz water-eject cycle — no app needed.
Decibel Meter
Approximate dB SPL from your mic — live bar, peak hold, average, and a 60s chart.
JSON Formatter
Pretty-print, minify, diff two JSON blobs side-by-side.
Code Minifier
Minify JS / CSS / HTML. Copy-ready, no dependencies.
Base64 Encoder
Encode or decode text and files with one click.
QR Generator
Generate crisp SVG/PNG QR codes. Wi-Fi & vCard presets.
Color Picker
Drop an image, steal its palette. HEX · OKLCH · RGB.
QR Reader
Decode QR codes from an image, pasted screenshot, or live camera — free, no upload.
HTML Preview
Live sandboxed HTML editor + preview with device widths — code never leaves your browser.
PGP Tool
Generate keys, encrypt, decrypt, sign & verify with OpenPGP.js — keys never leave your device.
DNS Lookup
Query A, MX, TXT, NS + more via Cloudflare or Google DoH — with TTLs, from your browser.
Speed Test
Download, upload, latency & jitter in ~20s — measured against Cloudflare, no sign-up.
Barcode Generator
EAN-13, UPC-A, EAN-8, Code 128, Code 39 & ITF-14 with automatic check digits — SVG + PNG.
MD5 Hash
Hash any text in the tab. The invert side only brute-forces short strings — MD5 cannot be decrypted.
SHA-1 Hash
SHA-1 hex via Web Crypto, plus an honest short brute-force — not a decoder.
SHA-256 Hash
SHA-256 online: hash, compare, or try a tiny local search. One-way, no upload.
SHA-512 Hash
512-bit digest in the browser. No decrypt, no rainbow table, no upload.
Box Shadow Generator
Offset, blur, spread, inset — live preview and one copy-ready CSS line.
RGBA to HEX
rgba() ↔ 6- and 8-digit hex, alpha included. Live swatch, copy any format.
Code to Image
Turn a snippet into a themed PNG — filename chrome, line numbers, local only.
PDF Compressor
Crush a 40 MB PDF to 4 MB. Readable, emailable.
Unit Converter
Length, weight, currency, timezones — one screen.
Timezone Converter
What time is 10am PT in Taipei? Answered fast.
ZIP Creator
Drag files, press ZIP, download. No server.
Markdown Preview
Live preview a .md file with GitHub styling.
LaTeX Preview
Render LaTeX math live with KaTeX. Inline + block.
Markdown to Google Docs
Convert Markdown to a paste-ready Google Doc. Roboto + LaTeX math.
Fancy Font Generator
Type once, copy 114 text styles — bold, script, fraktur, glitch, frames, upside-down, vaporwave.
Unzip Files
Open a ZIP in-browser: file tree with sizes, inline previews, extract one file or all.
VCF to CSV
Convert contact vCards to Excel or Google Contacts CSV — parses 2.1/3.0/4.0, no upload.
Invoice Generator
Free invoice with line items, tax, discount & logo — print straight to PDF, nothing uploaded.
PDF Merger
Merge, split and rotate PDFs in your browser — page ranges like 1-3,7, no upload.
File Transfer
Send files phone-to-laptop over a direct P2P link — code or QR, no upload, no size limit.
Sign PDF
Draw or type a signature, drop it on any page, download a flattened PDF — no upload.
Ad-Law Word Checker
Check Chinese ad copy against 广告法 banned words — catches traditional characters and spacing tricks, no upload.
Compare Lists
Paste two lists, get unique/common/union in one pass — case, whitespace and find-replace clean-up.
Lorem Ipsum Generator
Paragraphs, sentence length, classic opening, shuffle — placeholder text without a trip to the other site.
Text to Handwriting
Five handwriting fonts on lined or grid paper — download a PNG, fonts self-hosted.
Bionic Reading
Bold the fixation of each word, copy HTML or Markdown. Not affiliated with Bionic Reading®.
Repodle
Guess today’s trending GitHub repo. 6 tries, daily, shareable.
Star Duel
Higher or lower: which trending repo has more stars?
Chronograph
Precision stopwatch + countdown timer. Laps, alarm, fullscreen.
2FA Authenticator
Generate TOTP codes offline from your otpauth:// URIs.
Password Generator
Strong passwords, passphrases, PINs. Entropy meter. Local-only.
App Stats
Lookup iOS/Android app ranks & trends by country.
UTM Generator
Build tagged campaign URLs without a spreadsheet.
Substack RSS Finder
Get any Substack’s feed URL from a link, checked live.
IP Lookup
Reverse an IP to ASN, geo, ISP, and abuse rep.
Peepbo
A little terminal toy for whenever you need one.
Teleprompter
Fullscreen auto-scrolling script reader with mirror mode — free, no upload.
Golden Hour Calculator
Sunrise, sunset, golden & blue hour times for any city — free, in-browser.
Moon Phase Calendar
Today's moon phase, illumination, moonrise/set and a monthly phase calendar.
Countdown Timer
Drift-free countdown with alarm, progress ring, fullscreen, and Pomodoro presets.
Morse Code Translator
Text ↔ morse both ways, with 600 Hz audio playback at 5–30 WPM and screen-flash mode.
Random Name Picker
Spinner wheel, Pick-N and random team splitter — 10,000+ names, provably fair, no sign-up.
Dice Roller
Roll d4–d100 with 3d6+2 notation and advantage — crypto-random, provably fair.
Online Ruler
Actual-size cm/mm/inch ruler — calibrate with any bank card, drag the marker to measure.
Bubble Level
Spirit level on your phone — bull's-eye + edge bar, degree readout, calibrate to zero.
Text to Speech
Read any text aloud with your device's own voices — speed, pitch, no character limit.
Mouse DPI Analyzer
Measure your real mouse DPI on X and Y by moving a known distance — pointer-locked, no download.
Date Calculator
Days between dates, business days, and date plus-or-minus — free, in-browser.
Time Card Calculator
Weekly timesheet: clock in/out, breaks, overtime split, and gross pay — in-browser.
Stair Calculator
Stair stringer math: risers, treads, angle, IRC code check + to-scale diagram.
Pool Calculator
Pool volume in gallons or liters, plus chlorine, pH and alkalinity doses.
Conduit Bend Calculator
Offset, saddle and 90° stub marks for EMT — multipliers, shrink and take-up.
Land Area Calculator
Trace a parcel on a map to get acres, sq ft, m² and hectares plus perimeter.
Duct Size Calculator
Ductulator online — CFM to round or rectangular duct size, with a velocity check.
Cut List Optimizer
Nest plywood parts onto sheets with kerf and grain locks — printable layouts.
Miter Angle Calculator
Flat miters, crown compound miter and bevel, and polygon segment angles.
Roof Pitch Calculator
Pitch, degree angle, slope % and rafter length — with overhang, ridge deduction and a to-scale section.
Movie End Time Calculator
When the film really ends — including the 20 minutes of trailers the ticket never mentions.
Voice to Text
Live speech-to-text in 77 languages with timestamps and TXT export — no sign-up.
Local AI Chat
Chat with an LLM running on YOUR GPU via WebGPU — no API key, zero data leaves the device.
Mortgage Calculator
Monthly payment, amortization, total interest paid.
HELOC Calculator
Home equity line of credit — payoff vs. draw.
Leverage Calculator
Position size, max loss, liquidation for any leverage.
Instagram DM Generator
Fake Instagram chat, dark mode default — both sides editable, PNG export, not Instagram.
iMessage Generator
Fake iPhone texts, dark or light, blue or green bubbles, Delivered line.
WhatsApp Chat Generator
Fake WhatsApp screenshot, dark or light, PNG export. Not affiliated with WhatsApp.
Instagram Post Generator
Fake Instagram post with caption, likes and photo — light or dark PNG.
Social Card Checker
See the X / LinkedIn / Slack card your link will make — and whether the image actually loads.
Instagram Story Generator
9:16 fake story frame, overlay text, optional photo, PNG export.
Tweet to Image
Compose a tweet card and export a PNG. We do not fetch live X posts.
YouTube Thumbnail Grabber
Paste a URL, get every public CDN still — maxres down to frame grabs.
Vimeo Thumbnail Grabber
Public oEmbed poster for a Vimeo id. Private videos will not resolve.