Developer
Docker build context inspector
Explain missing or excluded Docker COPY sources using a local folder, Dockerfile and ignore rules.
Free · No sign-up
YOUR EVERYDAY TOOLKIT
Little tools.
Big possibilities.
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Explore the toolbox
Developer
Compose environment value explorer
Trace Docker Compose interpolation and service environment values through supplied files, shell fixtures and overrides locally.
Free · No sign-up
Developer
npm workspace lockfile inspector
Explain how workspace dependency declarations map to supplied package-lock entries and identify missing or mismatched resolutions.
Free · No sign-up
Developer
Avro migration replay
Replay sample records from a writer schema into a reader schema and inspect defaults, aliases, promotions and failures locally.
Free · No sign-up
Developer
TypeScript configuration provenance explorer
Trace effective TypeScript settings back through inherited configuration files, with source locations and override history.
Free · No sign-up
Files & images
DOCX numbering diagnostics
Trace a Word paragraph’s list numbering through styles, numbering definitions and level overrides without uploading the document.
Free · No sign-up
Everyday
Random bad joke
Find a terrible joke for your next stand-up, or browse the jokes and puns curated by Buddy Code's Director.
Free · No sign-up
Everyday
Keep awake
Keep your screen on while this page stays visible, with timed sessions, a clock and optional break reminders.
Free · No sign-up
Developer
JUnit report comparison
Compare two local test reports to find new and resolved failures, ambiguous identities and duration changes.
Free · No sign-up
Developer
OCI image archive inspector
Inspect local OCI and Docker-save archives, layer changes and the final path inventory without installing Docker.
Free · No sign-up
Developer
ABNF grammar test bench
Run reusable pass/fail sample suites against an ABNF grammar, with failure offsets and successful rule spans.
Free · No sign-up
Files & images
Local EML email inspector
Open saved email locally, inspect headers and plain text, and download selected attachments.
Free · No sign-up
Developer
Translation-file workbench
Edit Gettext PO translations and find missing, fuzzy or mismatched placeholders before export.
Free · No sign-up
Audio & music
MusicXML score viewer
Render a local MusicXML score, select visible parts, change notation zoom and print or export pages.
Free · No sign-up
Everyday
Critical-path project planner
Calculate project duration, critical tasks and slack, then compare the effect of extending a task.
Free · No sign-up
Files & images
Paper box-net generator
Generate a rectangular tray and optional lid, preview their assembly in 3D and download SVG/PDF cutting templates.
Free · No sign-up
Developer
State-machine tester
Step through events in a deterministic state machine and generate shortest transition test sequences.
Free · No sign-up
Files & images
Local folder-size map
See a selected folder's size treemap, largest files and totals by extension without reading file contents.
Free · No sign-up
Everyday
Gamepad input tester
Inspect controller buttons, triggers and axes, and export a short observed resting-position report.
Free · No sign-up
Developer
Prisma schema visualizer
Turn a Prisma schema into draggable UML and entity relationship diagrams with arranged SVG, reloadable layout JSON and Mermaid exports.
Free · No sign-up
Developer
SQL schema diagrammer
Turn SQL table definitions into a diagram of tables, keys and declared relationships.
Free · No sign-up
Files & images
Poster and pattern tiler
Print one large image or PDF page across overlapping A4 or Letter sheets with trim marks and an assembly map.
Free · No sign-up
Developer
Protocol Buffers message workbench
Decode binary Protocol Buffers messages or encode validated JSON with a supplied schema.
Free · No sign-up
Files & images
Colour-vision simulation preview
Compare a screenshot under named colour-vision simulations and export labelled PNG images.
Free · No sign-up
Developer
WebAssembly module inspector
Inspect imports, exports, section sizes and memory declarations, and export readable WAT without running the supplied module.
Free · No sign-up
Audio & music
FIR audio-filter designer
Design a low-pass or high-pass FIR filter, inspect frequency response and export coefficients.
Free · No sign-up
Calculators
DC resistor-network solver
Calculate node voltages, branch currents and power for ideal resistors and DC sources.
Free · No sign-up
Everyday
Rehearsal teleprompter
Rehearse a scrolling script with cue markers, mirror mode and estimated reading time.
Free · No sign-up
Developer
OpenAPI change checker
Compare two OpenAPI 3.1 JSON specifications and flag potentially breaking changes and unsupported cases.
Free · No sign-up
Developer
Local application-log explorer
Map JSONL log fields, filter a chronological timeline and inspect repeated error messages without uploading logs.
Free · No sign-up
Files & images
Font preview & glyph checker
Preview a local TTF or OTF font, check sample code-point coverage and export an SVG specimen.
Free · No sign-up
Files & images
Video frame extractor
Extract PNG or JPEG stills at selected timestamps from a local video and download a timestamp manifest.
Free · No sign-up
Developer
Offline certificate inspector
Inspect the subject, issuer, names, validity dates and SHA-256 fingerprint of a local public certificate.
Free · No sign-up
Developer
Binary file/hex inspector
Browse local byte ranges, search hexadecimal sequences and decode numeric values with explicit byte order.
Free · No sign-up
Everyday
Seating-plan builder
Assign attendees to tables with capacities and together/apart rules, then adjust and print the plan.
Free · No sign-up
Calculators
Cutting-stock planner
Arrange one-dimensional cuts in finite stock lengths and inspect offcuts, saw kerf and unplaced pieces.
Free · No sign-up
Files & images
File splitter and reassembler
Split a local file into numbered chunks and verify each checksum before reconstructing it from a manifest.
Free · No sign-up
Everyday
Webcam studio
Test your webcam, check lighting and frame rate, take photos and record video with optional microphone audio — all in one private browser workspace.
Free · No sign-up
Developer
Local SQL workbench
Query CSV and Parquet files, join local tables and export results with DuckDB in your browser.
Free · No sign-up
Developer
HAR performance viewer
Inspect local browser network logs for slow requests, timing phases and transferred bytes.
Free · No sign-up
Everyday
Contact-card builder
Enter contact details or import a CSV and generate downloadable vCard contact files.
Free · No sign-up
Audio & music
MIDI file inspector
Inspect MIDI tracks, tempos, notes and sustain-pedal timing, then export structured JSON.
Free · No sign-up
Audio & music
Audio spectrogram viewer
Visualise a short audio recording as frequency energy over time and export a labelled image.
Free · No sign-up
Files & images
STL model inspector
Rotate a local STL wireframe and inspect model dimensions and triangle counts.
Free · No sign-up
Files & images
SVG path editor
Edit vector endpoints and control points, scale or move a path and export SVG with bounds.
Free · No sign-up
Developer
Keyboard event tester
Highlight pressed keys and inspect modifiers, repeats and a downloadable local keyboard test session.
Free · No sign-up
Developer
Local MongoDB-style workbench — CamaDB
Import JSON collections, browse documents, run supported CamaDB queries, preview edits and export JSON locally.
Free · No sign-up
Files & images
PDF form filler
Fill existing PDF form fields and checkboxes, preview the result and download a missing-field report.
Free · No sign-up
Files & images
Printable label sheets
Convert CSV records into printable PDF labels with adjustable dimensions, margins and overflow warnings.
Free · No sign-up
Files & images
Image difference checker
Highlight changed pixels between two screenshots and measure the percentage changed.
Free · No sign-up
Everyday
Barcode generator
Validate and render Code 128 and EAN-13 barcodes, then download SVG or PNG assets.
Free · No sign-up
Files & images
PDF watermarks & page numbers
Stamp review copies and number selected PDF pages with configurable placement and opacity.
Free · No sign-up
Developer
Sprite-sheet packer
Pack small graphics into an atlas PNG and download a frame-coordinate JSON index.
Free · No sign-up
Health & fitness
GPX route inspector
Inspect a route outline, distance and elevation, then download a simplified GPX without using a map service.
Free · No sign-up
Everyday
Calendar conflict checker
Find overlapping ICS events and trace generated, excluded or overridden occurrences to their source calendar lines.
Free · No sign-up
Everyday
Tournament bracket maker
Seed entrants, handle byes and select winners in an exportable single-elimination bracket.
Free · No sign-up
Audio & music
Guitar chord-diagram builder
Draw supplied guitar fingerings with custom tuning and export SVG or PNG diagrams.
Free · No sign-up
Files & images
Image contact-sheet maker
Create labelled thumbnail grids from photos and export PDF or JPEG sheets.
Free · No sign-up
Files & images
Batch file renamer
Preview prefixes, numbering and literal replacements, then download renamed file copies in a ZIP.
Free · No sign-up
Files & images
Screenshot annotation
Add arrows, numbered markers and text to a screenshot, then export PNG privately in your browser.
Free · No sign-up
Files & images
ZIP creator & extractor
Bundle local files into a ZIP or inspect an archive and extract selected entries with explicit limits.
Free · No sign-up
Files & images
Subtitle timing fixer
Shift SRT or WebVTT subtitles and correct gradual timing drift, then export repaired timestamps.
Free · No sign-up
Files & images
Image palette extractor
Find representative image colours and copy HEX values or CSS custom properties.
Free · No sign-up
Developer
IPv4 subnet calculator
Convert CIDR prefixes and netmasks, calculate address ranges and check whether an IPv4 address belongs to a subnet.
Free · No sign-up
Everyday
Printable graph-paper generator
Generate A4 or US Letter graph, dotted or ruled paper as a printable PDF with custom spacing and colour.
Free · No sign-up
Everyday
Screen pixel test
Show solid colours and a grid for manual monitor inspection, with optional fullscreen display.
Free · No sign-up
Files & images
PDF splitter & page organiser
Organise PDF pages, inspect and reduce supported embedded images, and review bookmarks before a local export.
Free · No sign-up
Files & images
Images to PDF
Turn photos and screenshots into a PDF, with ordering, page sizes and margins. Files stay on your device.
Free · No sign-up
Everyday
QR code generator
Create QR codes for websites, text or Wi-Fi. Download PNG or SVG, with no account or redirect service.
Free · No sign-up
Calculators
Date & working-days calculator
Count days between dates or add and subtract days, with optional weekend exclusion.
Free · No sign-up
Developer
Text comparison
Find added and removed words or lines, privately in your browser.
Free · No sign-up
Files & images
Image cropper & resizer
Crop, rotate and resize images to exact dimensions, then download individually or as a batch.
Free · No sign-up
Audio & music
Metronome
Keep time with tap tempo, accented beats and a clear visual pulse.
Free · No sign-up
Developer
CSV ↔ JSON converter
Convert CSV and flat JSON with delimiter controls, source-positioned CSV errors, previews and local downloads.
Free · No sign-up
Health & fitness
Interval timer
Set work, rest and warm-up periods, with rounds, sound cues and a reusable local preset.
Free · No sign-up
Developer
Colour contrast checker
Check text and background colours against WCAG AA and AAA contrast thresholds.
Free · No sign-up
Health & fitness
Running pace calculator
Convert minutes per mile to minutes per kilometre, or the other way around.
Free · No sign-up
Files & images
PDF merger
Bring your PDFs together. Choose the order, merge, and download.
Free · No sign-up
Files & images
Image compressor
Resize an image manually or compare JPEG and WebP at the same dimensions against a target byte size.
Free · No sign-up
Developer
JSON formatter
Turn a wall of JSON into something you can read. Validate, format, and copy.
Free · No sign-up
Everyday
Time zone planner
Find your shared moment, wherever everyone happens to be.
Free · No sign-up
Audio & music
Background noise test
Check microphone background noise before a call, compare changes and export a report. Audio stays on your device.
Free · No sign-up
Audio & music
Guitar tuner
Tune your guitar online with chromatic pitch detection and eight tuning presets. Free, with microphone audio processed on your device.
Free · No sign-up