66 published tools. The homepage keeps a shorter featured list. Search here when you already know the job: merge, compress, convert, calculate, or format.
Tool directory
Search by task or open a category. Cards for PDF, image, text, calculator, and developer tools are all in this directory.
66 published tools
Only the groups people mix up are listed here. Fuel cost, hours, break-even, overtime, savings, and the other calculators each do a separate job and appear in the directory below.
Mortgage and EMI share one amortization formula. The inputs and what they solve for are different.
Both tools use the same inclusive and exclusive math. The label and currency context differ.
Each one answers a different question. None of them is a market forecast.
GPA, course grade, and a plain average are three different weightings.
A general percent is not a discount, a margin, a commission, or a tip.
Merge PDF files into one document with pdf-lib in your browser. Pages are copied, not re-rendered.
Split PDF pages into separate files or extract a page range with pdf-lib on your device.
Compress PDF by redrawing pages as JPEGs. Text selection, links, and form fields are not kept.
Rotate PDF pages 90°, 180°, or 270° with pdf-lib. The rewritten file stays on your device.
JPG to PDF by embedding images on PDF pages with pdf-lib. Photos are not OCR'd.
PDF to JPG by rendering each page with PDF.js. The worker script loads from unpkg.com.
Word to PDF extracts DOCX text with Mammoth and sets it in Helvetica. Styles and images are dropped.
PDF to Word copies extractable text into a DOCX. Scanned pages with no text layer stay empty.
Resize image to exact pixels or a percent. GIF input is a single frame, so animation is not kept.
Compress image with a quality and max-dimension setting, and compare the file size before download.
Crop image by pixel bounds or an aspect-ratio preset, then download the cropped region.
PNG to JPG at a quality you set. Transparent pixels become white because JPEG has no alpha.
JPG to PNG wraps the photo in a PNG. It does not restore detail the JPEG already lost.
WebP converter among WebP, JPG, and PNG, with output quality and detected input type.
Remove background on-device. The first run downloads model files from staticimgly.com.
Word counter for words, characters, sentences, paragraphs, and a reading-time estimate.
Character counter with spaces, without spaces, and UTF-8 bytes. Not a sentence counter.
Case converter for upper, lower, title, camelCase, snake_case, and kebab-case.
JSON formatter to pretty-print or minify JSON. Use JSON Validator when you only need the error.
JSON validator that parses input and reports the syntax error. It does not reindent the document.
Base64 encode for UTF-8 text. Decoding is a separate page.
Base64 decode from a Base64 string back to UTF-8 text. Encoding is a separate page.
UUID generator for random version-4 IDs via crypto.randomUUID. Not time-based UUID v1.
Password generator using crypto.getRandomValues, with length and character sets you choose.
Lorem ipsum generator by paragraph, sentence, or word count. Placeholder text only.
BMI calculator for kilograms and centimeters, with WHO-style adult bands. A screening figure, not a diagnosis.
Age calculator from a birth date: years, months, days, and total days to today.
Percentage calculator with four modes: X% of Y, what percent, increase, and decrease.
EMI calculator from principal, annual rate, and tenure in months. Principal and interest only.
Pakistan GST calculator in PKR. Add or remove a rate you enter, then confirm the current FBR rate.
Discount calculator: sale price and amount saved from a price and a percent off.
Date calculator to add or subtract calendar days, or count days between two dates.
Tip calculator for tip amount, bill total, and each person's share from a tip percent.
Compound interest calculator with yearly through daily compounding. Educational math, not advice.
Simple interest calculator using I = P × R × T. Interest is not compounded.
Profit margin calculator for profit, margin percent, and markup percent from cost and price.
Sales tax calculator to add or remove any rate you enter. Not the Pakistan GST tool.
Average calculator for the arithmetic mean of a number list. No weights or letter grades.
Grade calculator for a weighted percent and letter from scores and weights. Not a 4.0 GPA.
Fuel cost calculator: distance ÷ efficiency × price. Match miles with MPG, or km with km/L.
Hours calculator for the span between two clock times, including overnight shifts.
Area calculator for a rectangle, circle, or triangle. Output uses the length unit you enter.
Unit converter for length, weight, and temperature between metric and imperial units.
CAGR calculator for the annualized rate between a start value, end value, and year count.
Break-even calculator for units and revenue that cover fixed costs on one product.
Hourly rate calculator between gross annual salary and hourly pay, using your hours and weeks.
Volume calculator for a box, cylinder, or sphere. Cubic units match the lengths you enter.
GPA calculator on a 4.0 letter scale, weighted by course credits. Not a percent grade.
Loan payoff calculator for months to clear a balance at a payment and APR you set.
Inflation calculator for purchasing power after a constant annual rate. Not a CPI forecast.
Mortgage calculator for US fixed-rate principal and interest. Taxes, insurance, and PMI excluded.
Fraction calculator that reduces a numerator and denominator to lowest terms.
Ratio calculator that scales A:B when one side is known. Not a percent or margin.
Speed distance time calculator. Solve one of the three and keep a single unit system.
Savings goal calculator for months to a cash target at a fixed monthly amount. No interest.
Overtime pay calculator from hourly rate, regular hours, overtime hours, and your multiplier.
Commission calculator for sales × rate plus optional base pay. One flat rate only.
Regex tester for JavaScript RegExp, with flags and match indexes. Other engines can differ.
URL encoder using encodeURIComponent for query values. Decoding is a separate page.
URL decoder using decodeURIComponent, with an error when the percent-encoding is invalid.
HTML formatter that reindents markup with js-beautify. It does not minify.
CSS beautifier that reindents stylesheets with js-beautify. Minifying is a separate tool.
JS beautifier that reindents JavaScript with js-beautify. It does not transpile or bundle.
CSS minifier that removes comments and collapses whitespace. It is not a full optimizer.
JS minifier that strips comments and whitespace. It does not rename variables.
Hash generator for MD5, SHA-1, SHA-256, and SHA-512 hex digests. Input stays in the page.