Private by design

Free browser tools for files, printables and project calculations

Repair subtitles and text, generate printable PDFs and plan cabinet, woodworking and home-improvement projects. Processing stays in your browser.

Browse all tools Create a printable

✓ No registration ✓ Local processing ✓ SVG and PDF downloads

1Enter measurements, text or local files

2Your browser calculates or generates the result

3Download, print or copy the result

No remote processing API is required by the included tools.

Seven focused collections

Working utilities, generators and calculators

Each page includes a working interface, focused examples, privacy notes and practical guidance.

Text & Encoding Tools

Repair mojibake, decode escaped text, convert legacy files to UTF-8 and remove hidden characters.

7 tools → CC

Subtitle & Creator Tools

Convert, repair, analyze and prepare subtitles, captions, chapters and social video assets.

21 tools → </>

Web Developer Repair Tools

Validate and repair JSON, convert CSV data, inspect tokens and parse URL parameters.

40 tools → PDF

Printable Generator Tools

Create customizable worksheets, planners, labels, cards and classroom printables as SVG or PDF.

20 tools → CAB

Kitchen & Cabinet Calculators

Calculate cabinet doors, drawers, overlays, countertops, hardware placement, costs and spacing.

10 tools → WOOD

Woodworking Calculators

Plan lumber, plywood, cuts, shelf loads, miters, stairs and workshop measurements.

10 tools → HOME

Home Improvement Calculators

Estimate tile, flooring, paint, wallpaper, drywall, concrete, gravel, fencing, decking and roofing.

10 tools →

118 working utilities

All free browser-based tools

Text & Encoding Tools

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Mojibake Fixer Repair garbled UTF-8, Latin-1 and Windows-1252 text.

File Encoding Converter to UTF-8 Convert local text files from GBK, Shift-JIS, Big5 and more to UTF-8.

URL Encoder and Decoder Encode or decode URL components, including repeated encoding.

HTML Entity Encoder and Decoder Convert HTML entities to text or safely encode special characters.

Unicode Escape Converter Encode text as Unicode escapes or decode escaped strings.

Invisible Character Remover Remove zero-width spaces, BOM marks and hidden control characters.

Text Normalizer and Cleaner Normalize Unicode, line endings, spaces and blank lines.

Subtitle & Creator Tools

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SRT to VTT Converter Convert SubRip subtitles to WebVTT in your browser.

VTT to SRT Converter Convert WebVTT captions to numbered SRT subtitles.

Subtitle Time Shifter Move every SRT or VTT timestamp forward or backward.

Subtitle Encoding Fixer Convert garbled SRT and VTT files to UTF-8.

SRT Renumber and Repair Tool Renumber cues and clean common SRT block formatting errors.

Subtitle Word and Reading Speed Counter Count cues, words, characters, duration and reading speed.

Subtitle Line Break Fixer Wrap and balance long subtitle lines without changing timestamps.

Subtitle Reading Speed Checker Measure words per minute for every subtitle cue.

Subtitle CPS Calculator Calculate characters per second and flag dense captions.

Subtitle Duration Calculator Measure cue duration, gaps, overlaps and total subtitle coverage.

Subtitle Case Converter Change subtitle text case while preserving timestamps and tags.

Remove Hearing-Impaired Captions Remove sound descriptions, speaker labels and music symbols.

Merge Two Subtitle Files Combine two SRT or VTT files into one ordered subtitle track.

Split Subtitle File Split SRT or VTT subtitles by cue count, duration or equal parts.

Subtitle Translator Template Export Export subtitle cues to CSV, TSV or JSON translation templates.

YouTube Chapter Generator Build chapter timestamps from titles and segment durations.

YouTube Timestamp Formatter Normalize mixed timestamp lists for descriptions and comments.

Video Aspect Ratio Calculator Calculate ratios, scaled dimensions, crop and letterbox sizes.

Social Video Safe-Zone Preview Preview text and UI safe zones over a local image.

Online Teleprompter Run a mirrored, adjustable browser teleprompter.

Caption Background Generator Create downloadable caption cards and text backgrounds.

Web Developer Repair Tools

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JSON Formatter and Validator Validate, pretty-print and minify JSON.

JSON Repair Tool Repair common JSON mistakes and validate the result.

JSON to CSV Converter Convert arrays of JSON objects into downloadable CSV.

CSV to JSON Converter Parse CSV with quoted fields and convert rows to JSON objects.

Base64 Encoder and Decoder Encode and decode Unicode text with Base64.

JWT Decoder Decode JWT headers and payloads without sending the token anywhere.

Query String Parser and Builder Parse URL parameters into JSON or build an encoded query string.

XML Formatter and Validator Validate, format and minify XML.

XML to JSON Converter Convert XML documents to JSON.

JSON to XML Converter Convert JSON objects to XML.

YAML to JSON Converter Convert common YAML data to JSON.

JSON to YAML Converter Convert JSON to readable YAML.

HTML Formatter and Minifier Format or minify HTML markup.

CSS Formatter and Minifier Format or minify CSS.

JavaScript Formatter and Minifier Format or compact JavaScript snippets.

SQL Formatter Format common SQL statements.

Markdown to HTML Converter Convert Markdown to HTML preview.

HTML Text Extractor Extract readable text from HTML.

Regular Expression Tester Test regex patterns and replacements.

Text Diff Checker Compare two text versions.

Line Sorter and Deduplicator Sort, trim and remove duplicate lines.

UUID Generator Generate UUID v4 identifiers.

Hash Generator Generate SHA hashes for text or files.

HMAC Generator Generate keyed HMAC signatures.

Unix Timestamp Converter Convert Unix timestamps and dates.

Cron Expression Explainer Explain common five-field cron expressions.

Color Converter Convert HEX, RGB and HSL colors.

CSS Gradient Generator Build CSS linear gradients.

Meta Tag Generator Generate SEO title and description tags.

Open Graph Tag Generator Generate Open Graph and Twitter tags.

Robots.txt Generator Build a robots.txt file.

XML Sitemap URL Builder Build a small XML sitemap from URLs.

Apache Redirect Generator Generate common .htaccess redirects.

Nginx Redirect Generator Generate common Nginx redirects.

HTTP Header Parser Parse raw HTTP headers.

Cookie Parser and Builder Parse Cookie and Set-Cookie headers.

Content Security Policy Builder Build a CSP header from directives.

User-Agent Parser Inspect browser and device user agents.

URL Normalizer Normalize and clean URLs.

URL Slug Generator Create clean URL slugs from titles.

Printable Generator Tools

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Graph Paper Generator Generate graph paper with custom grid and major lines.

Dot Grid Paper Generator Create dot grid paper with adjustable dot spacing and size.

Lined Paper Generator Make ruled writing paper with custom line spacing.

Handwriting Practice Sheet Generator Build handwriting worksheets from custom words or sentences.

Chinese Character Practice Sheet Generator Create Chinese character grids with traceable examples.

Japanese Kana Practice Sheet Generator Create hiragana and katakana practice worksheets.

Bingo Card Generator Generate randomized bingo cards from your word list.

Word Search Generator Build printable word-search puzzles and answer keys.

Flashcard Generator Turn term and definition pairs into printable flashcards.

Name Tracing Worksheet Generator Create personalized name tracing worksheets.

Multiplication Worksheet Generator Generate randomized multiplication worksheets and answer keys.

Chore Chart Generator Create weekly chore charts for families or classrooms.

Weekly Planner Generator Generate weekly planner pages with custom sections.

Recipe Card Generator Design printable recipe cards from ingredients and steps.

Pantry Label Generator Make printable pantry and storage labels.

Gift Tag Generator Create personalized gift tags with optional hole markers.

Certificate Generator Design a printable certificate with borders and signatures.

Seating Chart Generator Arrange guests around configurable tables.

Numbered Ticket Generator Generate sequentially numbered ticket sheets.

QR Code Label Sheet Generator Create printable QR code label sheets locally.

Kitchen & Cabinet Calculators

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Cabinet Door Size Calculator Calculate inset, partial-overlay or full-overlay cabinet door dimensions.

Cabinet Opening Size Calculator Work backward from cabinet door size to the required opening.

Drawer Box Size Calculator Calculate drawer-box width, height and depth from an opening.

Drawer Slide Clearance Calculator Compare drawer opening, box width and slide clearance.

Cabinet Hinge Overlay Calculator Calculate hinge overlay from opening and door dimensions.

Kitchen Cabinet Cost Estimator Estimate cabinet, countertop, installation and tax costs.

Countertop Square Footage Calculator Calculate countertop area from multiple rectangular segments.

Cabinet Knob and Pull Placement Calculator Calculate repeatable hardware center positions.

Toe Kick Size Calculator Estimate toe-kick length, face area and volume.

Shelf Spacing Calculator Divide cabinet height into equal shelf openings.

Woodworking Calculators

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Board Foot Calculator Calculate lumber volume in board feet.

Plywood Sheet Calculator Estimate plywood sheets for panels or total area.

Cut List Calculator Pack cut lengths into stock boards with a kerf allowance.

Wood Weight Calculator Estimate board weight from dimensions and species density.

Shelf Sag Calculator Estimate shelf deflection under a distributed load.

Miter Angle Calculator Calculate miter cuts for corners and regular polygons.

Compound Miter Calculator Calculate crown-molding miter and bevel settings.

Stair Stringer Calculator Calculate riser count, actual rise, run and stringer length.

Decimal to Fraction Calculator Convert decimal measurements to practical fractions.

Fraction Calculator for Woodworking Add, subtract, multiply or divide mixed workshop fractions.

Home Improvement Calculators

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Tile Calculator Estimate tile count, boxes and waste.

Flooring Calculator Estimate flooring area and boxes for multiple rooms.

Paint Calculator Estimate wall and ceiling paint by coats and coverage.

Wallpaper Calculator Estimate wallpaper rolls including pattern repeat.

Drywall Calculator Estimate drywall sheets, screws and joint compound.

Concrete Calculator Calculate concrete volume and bag quantity.

Gravel Calculator Estimate gravel volume, weight and tons.

Fence Calculator Estimate posts, panels, rails and pickets.

Deck Board Calculator Estimate deck-board rows, pieces and linear footage.

Roofing Calculator Estimate roof area, squares and shingle bundles.

Built for useful search visits

Every page solves one specific problem

Real inputs and usable outputs

Visitors can process local files, generate SVG/PDF printables, run project calculations and download useful outputs.

Clear privacy promise

The included Content Security Policy blocks network connections from page scripts, reinforcing local processing for files and generated documents.

Expandable structure

The code is split into focused modules so new tools can be added without rebuilding the site.