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Text & data151
- Text to Base64 converter
- Base64 to text converter
- URL encoder
- URL decoder
- HTML escape tool
- HTML unescape tool
- Case converter (camelCase, snake_case...)
- URL slug generator
- SHA-256 hash generator
- SHA-1 hash generator
- JSON formatter
- JSON minifier
- UUID v4 generator
- Lorem Ipsum generator
- Word counter & reading time
- X / Twitter character counter
- Text cleaner
- ROT13 cipher
- Text to Morse code converter
- Morse code to text converter
- JWT decoder
- Text reverser
- Remove duplicate lines
- Sort lines alphabetically
Numbers & units32
- Binary / hex / decimal converter
- Length converter
- Pounds to kg converter
- km/h to mph converter
- MB to GB converter
- Area converter
- Celsius to Fahrenheit converter
- Unix timestamp to date converter
- Number to words converter
- Percentage calculator
- Roman numerals converter
- Rule of three (cross multiplication)
- Weighted average (grades with coefficients)
- Statistics: median, mode, variance, standard deviation
- Fraction calculator
- Online scientific calculator
- Function plotter (curves and intersections)
- Printable multiplication tables
- Volume converter
- Time unit converter
- Pressure converter
- Energy converter
- Power converter
- Angle converter
Colors7
Images134
- PNGJPG
- PNGWebP
- PNGAVIF
- PNGBMP
- PNGGIF
- PNGSVG
- PNGICO
- PNGTIFF
- PNGPDF
- JPGPNG
- JPGWebP
- JPGAVIF
- JPGBMP
- JPGGIF
- JPGSVG
- JPGICO
- JPGTIFF
- JPGPDF
- WebPPNG
- WebPJPG
- WebPAVIF
- WebPBMP
- WebPGIF
- WebPSVG
PDF34
- Merge PDF files
- Split / extract PDF pages
- Rotate PDF
- Compress PDF
- PDF to Word converter
- Word to PDF converter
- PDFPNG
- PDFJPG
- PDFWebP
- PDFBMP
- PDFTIFF
- PDFGIF
- Sign a PDF online
- PDF info / metadata
- PDF to text
- PDF watermark
- Delete PDF pages
- Merge images into one PDF (reorder, rotate)
- Text to PDF
- Add page numbers to a PDF
- Reorder PDF pages
- Reverse PDF page order
- Edit PDF metadata
- PDF to images (all pages)
Audio223
- WAVMP3
- OGGMP3
- M4AMP3
- FLACMP3
- AACMP3
- OPUSMP3
- WMAMP3
- AIFFMP3
- AC3MP3
- AMRMP3
- MKAMP3
- WEBAMP3
- AUMP3
- MP2MP3
- CAFMP3
- AudioMP3
- VideoMP3
- MP3WAV
- OGGWAV
- M4AWAV
- FLACWAV
- AACWAV
- OPUSWAV
- WMAWAV
Video166
- MOVMP4
- MKVMP4
- WebMMP4
- AVIMP4
- FLVMP4
- WMVMP4
- MPGMP4
- 3GPMP4
- OGVMP4
- TSMP4
- M4VMP4
- MTSMP4
- VOBMP4
- 3G2MP4
- VideoMP4
- MP4MOV
- MKVMOV
- WebMMOV
- AVIMOV
- FLVMOV
- WMVMOV
- MPGMOV
- 3GPMOV
- OGVMOV
Developer42
- Diagram and flowchart editor (SVG and PNG export)
- Mermaid diagram editor (flowcharts from text)
- Visual JSON editor with tree view
- SQL schema diagram from CREATE TABLE
- Online code editor (JavaScript, Python, SQL, Lua, HTML)
- Button and CSS component builder (HTML + CSS code)
- JSON to classes (TypeScript, Python, Go, Java)
- cURL to code (fetch, Python)
- JSON, XML, YAML and CSS beautifier and minifier
- HTML formatter
- HTML minifier
- XML formatter
- CSS formatter
- CSS minifier
- JavaScript formatter
- JavaScript minifier
- SQL formatter
- MD5 hash generator
- Regex tester
- CSS gradient generator
- CSS box-shadow generator
- robots.txt generator
- .htaccess generator
- Cron expression explainer
Finance & health28
- VAT calculator (net ↔ gross)
- Hourly rate to monthly and yearly salary
- Inflation calculator
- Rule of 72 (years to double)
- Ovulation calculator
- Weight loss calculator (calorie deficit)
- Invoice generator (PDF)
- Loan / mortgage payment calculator
- Compound interest calculator
- VAT / sales tax calculator
- BMI calculator
- Daily calorie needs (TDEE) calculator
- Tip calculator
- Discount calculator
- Profit margin calculator
- ROI calculator
- Savings goal calculator
- Simple interest calculator
- Hourly, monthly, yearly salary converter
- Trip fuel cost calculator
- BMR calculator
- Ideal weight calculator
- Body fat calculator
- Daily water intake calculator
Utilities83
- What day of the week is a date?
- Leap year checker
- Zodiac sign calculator
- Days until my birthday
- Hours calculator (time between two times)
- Cooking converter (cups, grams, ml)
- Shoe size converter (EU, US, UK, cm)
- Ring size converter
- Online spreadsheet (formulas, CSV and Excel export)
- Online mind map (SVG and PNG export)
- Online kanban board (drag-and-drop tasks)
- Printable weekly planner (PDF)
- Printable weekly meal planner (PDF)
- Online shopping list (tick off, print)
- Online sudoku (a new grid every game)
- Online snake game
- Online Tetris
- PDF page organizer: thumbnails, drag and drop, merge, extract
- Fill and sign a PDF online
- CSV chart maker (bars, lines, pie)
- Flashcards with spaced repetition
- Interactive periodic table
- Decorated QR code generator (logo, colours, rounded corners)
- Business card with vCard QR code
Social media10