# Tool Tags

> Browse QiLing Tools by tag: PDF, image, audio, video, chemistry, physics, finance, AI, privacy, converters and more. A tool can have several tags, so you can find it across categories.

- URL: https://qilingtools.com/en/tags

- [PDF](https://qilingtools.com/en/tags/pdf): Every tool that works with PDF files: merge, split, compress, convert, sign, OCR and more, processed locally in your browser.
- [Image](https://qilingtools.com/en/tags/image): Every tool that works with images: compress, crop, convert, remove backgrounds, adjust colors, effects, and export images from PDF or video.
- [Audio](https://qilingtools.com/en/tags/audio): Every tool that works with audio: trim, convert, denoise, mix, record, speech to text and more, running locally with FFmpeg.
- [Video](https://qilingtools.com/en/tags/video): Every tool that works with video: compress, trim, merge, subtitles, GIF conversion, screen recording and more, processed locally.
- [Math](https://qilingtools.com/en/tags/math): Function graphing, calculators, equation solvers, calculus, matrices, geometry and number theory tools, ready to use.
- [Chemistry](https://qilingtools.com/en/tags/chemistry): Balance chemical equations, molar mass, periodic table, pH, titration curves, gas laws, solutions, equilibrium, electrochemistry and more.
- [Physics](https://qilingtools.com/en/tags/physics): Simulations of projectiles, pendulums, collisions and orbits; optics and blackbody radiation; waves and the Doppler effect; circuits and relativity.
- [Statistics](https://qilingtools.com/en/tags/statistics): Averages, regression, probability distributions, hypothesis tests, Bayes, normal tables, box plots, sample size and random simulation.
- [Finance](https://qilingtools.com/en/tags/finance): Mortgages, interest, income tax, salary, investment returns, discounts and unit prices, bill splitting, expense tracking and invoices.
- [Education](https://qilingtools.com/en/tags/education): Tools for students and teachers: step-by-step solvers, math drills, handwriting sheets, timetables, flashcards, certificates and visual demos.
- [Kids](https://qilingtools.com/en/tags/kids): Math drills, times tables, long division, telling time, abacus, fraction visuals, the 24 game, handwriting sheets and more for young learners.
- [Music](https://qilingtools.com/en/tags/music): Tuner, metronome, piano, drum machine, chords and scales, circle of fifths, MIDI, BPM detection, karaoke and lyrics.
- [Text](https://qilingtools.com/en/tags/text): Word count, diff, sort and dedupe, find and replace, case conversion, Chinese conversion, OCR, text to speech and more.
- [Chinese](https://qilingtools.com/en/tags/chinese): Pinyin, Simplified/Traditional conversion, handwriting sheets, Chinese numerals, handwriting fonts, lunar calendar and WeChat formatting.
- [Markdown](https://qilingtools.com/en/tags/markdown): Markdown preview, tables, conversion to and from HTML and PDF, Markdown slides and mind maps.
- [AI](https://qilingtools.com/en/tags/ai): AI models running locally in your browser: background removal, upscaling, OCR, face blurring, smart crop, retouching, speech recognition.
- [Privacy & Security](https://qilingtools.com/en/tags/privacy): Encryption, password generation and checking, EXIF removal, redaction, face blurring, hashing, TOTP codes and certificate decoding.
- [Converters](https://qilingtools.com/en/tags/convert): Convert between PDF, image, audio, video, document and data formats, plus number bases, units, encodings and time zones.
- [Compression](https://qilingtools.com/en/tags/compress): Zip and unzip files, extract RAR / 7Z archives, compress PDFs, images and videos to a target size, and minify SVG, CSS and JavaScript.
- [Merge & Split](https://qilingtools.com/en/tags/split-merge): Merge or split PDFs, audio and video, stitch and slice images, collages, video grids and panoramas.
- [Watermark](https://qilingtools.com/en/tags/watermark): Add text or logo watermarks to PDFs, images and videos, remove watermarks, and add camera info frames.
- [GIF](https://qilingtools.com/en/tags/gif): Make and edit GIFs, convert video to GIF or animated WebP, and GIF to video.
- [Photo Editing](https://qilingtools.com/en/tags/photo): Color adjustments, filters, curves, LUTs, sharpening and denoising, auto enhance, retouching, background blur, crop and straighten, video grading.
- [Creative Effects](https://qilingtools.com/en/tags/effects): Sketch, oil paint, cartoon, pixel art, ASCII art, glitch, double exposure, halftone, tilt-shift, fractals, voice changer and 8D audio.
- [Design](https://qilingtools.com/en/tags/design): Color picking and palettes, gradients and shadows, contrast checks, icons and favicons, wallpapers and avatars, cards, art QR codes and textures.
- [Charts & Visualization](https://qilingtools.com/en/tags/chart): Charts, function graphs, mind maps, flowcharts, Gantt charts, word clouds, waveforms, spectrograms and algorithm visualizations.
- [Documents](https://qilingtools.com/en/tags/document): PDF to Word, PPT and Excel, resumes, invoices, spreadsheets, slides, email signatures, business cards and calendars.
- [Printing](https://qilingtools.com/en/tags/print): ID photo layouts, ID card copies, booklets, poster tiling, N-up, graph paper, handwriting sheets, labels, envelopes and planners.
- [Scanning](https://qilingtools.com/en/tags/scan): Document scanning, OCR, deskewing, duplex merging, spread splitting, blank page removal and scan effects.
- [Recording](https://qilingtools.com/en/tags/record): Record audio, screen and webcam, speech to text, sound level meter and tuner.
- [Subtitles](https://qilingtools.com/en/tags/subtitle): Burn subtitles, extract embedded subtitles, edit subtitles, LRC lyrics and speech to text.
- [Social Media](https://qilingtools.com/en/tags/social): Platform image sizes, screenshot beautifier, memes, avatars, video covers, vertical reframing, audiograms and WeChat formatting.
- [QR & Barcode](https://qilingtools.com/en/tags/qrcode): Generate QR codes, art QR codes, scan QR codes and generate barcodes.
- [Date & Time](https://qilingtools.com/en/tags/time): Timestamps, date math, timers, time zones, calendars, countdowns, cron expressions and habit tracking.
- [Everyday Life](https://qilingtools.com/en/tags/life): BMI, bill splitting, unit prices, expenses, mortgage, tax and salary, random pickers, ID photos, white noise and more.
- [Fun & Games](https://qilingtools.com/en/tags/game): Spin wheel, random picker, 24 game, sudoku, typing test, bingo, word puzzles, jigsaws, dice and game sound effects.
- [Developer](https://qilingtools.com/en/tags/dev): JSON, encoding, regex, hashing, network debugging, config generators and more developer tools, running locally.
- [Data Formats](https://qilingtools.com/en/tags/data): JSON formatting and diffing, CSV / YAML / XML / TOML conversion, JSON to TypeScript or SQL, schemas, binary decoding and tables.
- [Code Formatting](https://qilingtools.com/en/tags/format): Format, minify and escape JSON, SQL, CSS, HTML, JavaScript and XML.
- [Frontend](https://qilingtools.com/en/tags/frontend): CSS gradients and shadows, clip-path, Flex/Grid, Tailwind palettes, meta tags, favicons, sprites, SVG optimization, XPath and more.
- [Network & HTTP](https://qilingtools.com/en/tags/network): HTTP requests and status codes, WebSocket, curl to code, URL parsing, subnet and IPv6 calculators, security headers and certificates.
- [DevOps](https://qilingtools.com/en/tags/devops): Docker, Nginx, Kubernetes and systemd config generators, chmod, cron, .gitignore, SSH keys, htpasswd and open-source licenses.
- [Encoding](https://qilingtools.com/en/tags/encode): Base64, URL, Unicode, HTML entities, number bases, Morse code, JWT, hashing and hex viewing.
- [Algorithms](https://qilingtools.com/en/tags/algorithm): Sorting algorithms, graph theory, linear programming, sudoku, Markov chains, game theory, number theory, classical ciphers and fractals.
- [Productivity](https://qilingtools.com/en/tags/office): Mind maps, kanban, whiteboard, timers, notepad, batch rename and more productivity tools.