All Tools
117 tools available — all free, no account needed
Showing 73–96 of 117 tools
HTML Encoder/Decoder
Convert special characters to HTML entities and back, with optional quote, slash and space encoding.
URL Encoder/Decoder
Percent-encode or decode URLs with a choice of encodeURIComponent or encodeURI and a query parameter breakdown.
Base64 Encoder/Decoder
Encode or decode Base64 with full Unicode support, URL-safe output and optional padding removal.
Markdown Editor
Write Markdown with a toolbar and live preview, then copy or download the Markdown or the rendered HTML.
Regex Tester
Test regex patterns live against sample text, with match positions, capture groups, named groups and flag toggles.
CSS Minifier
Compress CSS by stripping comments and whitespace, with calc() and licence comments protected.
SQL Formatter
Format messy SQL into indented, readable clauses, or minify it to a single line without breaking literals.
Diff Checker
Compare two texts line by line with inline word highlights, unified or split view and adjustable context.
Cron Expression Generator
Build or decode five-field cron expressions with per-field modes, ready-made presets and a plain English summary.
MD5 Hash Generator
Turn any text into its 32-character MD5 hash in the browser, with optional auto-hashing as you type.
SHA256 Hash Generator
Produce the 64 character SHA-256 hexadecimal digest of any text, computed in your browser with the Web Crypto API.
UUID Generator
Generate up to 100 version 4, 1 or 7 UUIDs in lowercase or uppercase and copy them in one click.
Password Strength Checker
Check a password against six rules and see a live strength rating with targeted suggestions.
Image Compressor
Compress and resize JPG, PNG, WebP or GIF images in your browser with a quality slider and width presets.
Image Resizer
Resize images to exact pixel dimensions with aspect-ratio lock, then export as JPEG, WebP or PNG in your browser.
Image Converter
Convert JPG, PNG, WebP, GIF or BMP images to JPEG, PNG or WebP with a quality slider and size comparison.
Watermark Tool
Overlay a text or logo watermark on a photo with control over size, opacity, rotation, position and tiling.
Meme Generator
Add top and bottom captions to your own image and download the result as a PNG or JPEG.
Pomodoro Timer
A Pomodoro timer with custom session lengths, auto-start options, a chime alert and a daily focus count.
Study Timer
Plan up to ten study sessions with custom study and break lengths, auto-start, a chime and notifications.
Expense Tracker
Log spending by category and payment method, watch the monthly total, and export the lot as CSV.
Budget Planner
List your income, sort spending into needs and wants, add savings goals, and see how your split compares with 50/30/20.
Flashcard Creator
Build question and answer flashcards with categories, study with tap-to-flip and shuffle, then export as JSON or CSV.
Quiz Generator
Paste a passage or name a topic and get a scored quiz with an answer key and explanations.
Two ways the questions are produced
When no source text is provided, questions are taken instead from a built-in bank of curated items covering a set of common subjects, matched as closely as possible to the topic you typed. The interface tells you which of the two paths produced the quiz.
Marking is done in the page. Multiple choice and true or false items are compared against the stored correct option, short answers against the expected answer text, and the total is reported both as a count and as a percentage.
Worked example: five mixed questions from a short passage
The result is a five-item quiz mixing formats. A multiple choice item might ask which pigment absorbs light during photosynthesis, offering four options labelled A to D drawn from terms in your passage. A true or false item might state that photosynthesis releases carbon dioxide, which your passage contradicts. A short answer item might ask where in the cell the process takes place, expecting the word chloroplast.
Answer all five, get four right and the score reads 4 out of 5, which is 80 per cent. Each question shows a tick or a cross, and revealing the answer key displays the correct response along with the explanation for each item.
Switching the type to Multiple Choice only and the count to ten regenerates the quiz in the same format throughout, still drawn from the same passage.
Checking the output before you put it in front of learners
Short answer marking compares your typed response against the expected answer, so a correct idea expressed in different words, or with a typing slip, can be marked wrong. Treat that format as self-study prompting rather than formal assessment, and lean on multiple choice or true or false when you need dependable automatic marking.
A few practical habits help. Give at least three or four sentences of source text, since very short passages leave too little material for varied questions and for plausible distractors. Keep the question count in proportion to the passage: asking for twenty questions from a single paragraph forces repetition. And if you generate without source text, check that the built-in bank actually covers your subject, since a niche topic may return general questions instead.