# Free Online Productivity Tools: Mind Map, Date Calculator, Timer, Time Zones, Barcodes, Text to Speech

> Free productivity tools in your browser: QiLing Mind mind maps with XMind and Markdown import/export, date difference and age calculator, stopwatch, countdown and Pomodoro timer, world clock and time zone converter, text cleanup and bulk find & replace, random name picker and team generator, BMI calculator, barcode generator, text to speech, password generator, QR codes, word count, case conversion, line sorting, Chinese pinyin, Simplified/Traditional Chinese conversion, a chart maker, a Chinese lunar calendar, a typing test, Morse code, a spin-the-wheel picker, an online notepad, a bill splitter, day countdowns, a kanban board, flashcards, an emoji picker, invoices and receipts, a resume builder, word clouds, a password checker, speech to text, a teleprompter, a whiteboard and a habit tracker, spreadsheet, Gantt chart, flowchart maker, calendar maker, WeChat article formatter, timetable, certificate maker unit price comparison, copybooks, seating charts, envelope and label printing, business cards, styled QR codes ID number validation, batch renaming, graph and music paper, planners, word search and crossword puzzles, bingo cards, Markdown slides, an expense tracker, a decision matrix, email signatures, invitation cards, text analysis, a meeting planner, reading speed and brain tests, shift rosters, a gift ledger, document templates, a ZIP compressor and extractor, a RAR / 7Z extractor, a ZIP password tool, a tar / tar.gz packer, a large-file splitter, Excel to CSV / JSON, Word to Markdown, PowerPoint to outline and notes, TXT to EPUB, and EPUB text extraction and metadata editing. Runs locally, nothing is uploaded.

- URL: https://qilingtools.com/en/office
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

## Tools (93)

- [QiLing Mind](https://qilingtools.com/en/mindmap): QiLing Mind is a free online mind map editor: add nodes with Tab/Enter, drag to restructure, import and export XMind and Markdown, export PNG/SVG/PDF.
- [Password Generator](https://qilingtools.com/en/password): Free online random password generator: choose length, character sets and look-alike exclusions, generate several at once with a strength meter, all locally.
- [QR Code Generator](https://qilingtools.com/en/qrcode): Free online QR code generator: turn URLs, text, Wi-Fi or contact cards into QR codes with custom size, colour and error correction. Crisp PNG or vector SVG.
- [Word Counter](https://qilingtools.com/en/word-count): Free online word counter: live counts of characters with and without spaces, words, CJK characters, lines, paragraphs, sentences, bytes and reading time.
- [Case Converter](https://qilingtools.com/en/case-convert): Free online case and naming converter: get UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE at once.
- [Lorem Ipsum Generator](https://qilingtools.com/en/lorem): Free online Lorem Ipsum generator: classic Latin placeholder text or Chinese filler by paragraph, sentence or word, with one-click copy for mockups.
- [Sort & Dedupe Text](https://qilingtools.com/en/text-sort): Free online text tool: sort lines alphabetically or by length, remove duplicate and empty lines, trim whitespace, optionally ignoring case. Runs locally.
- [Sign & Stamp PDF](https://qilingtools.com/en/pdf/sign): Free online PDF signing tool: drop in a handwritten signature or company stamp, drag it into place on a page preview, adjust size and opacity, then export.
- [Barcode Generator](https://qilingtools.com/en/barcode): Free online barcode generator: Code 128 with automatic code sets, EAN-13 with its check digit and Code 39. Adjust size, quiet zone and colours; SVG or PNG.
- [BMI Calculator](https://qilingtools.com/en/bmi): Free online BMI calculator: height and weight give your body mass index, the WHO and Chinese categories, a healthy weight range, plus BMR and daily calories.
- [Date Calculator](https://qilingtools.com/en/date-calc): Free online date calculator: days, weeks, months and workdays between two dates; add or subtract to find a date and its weekday; exact age and next birthday.
- [Random Name Picker](https://qilingtools.com/en/random-picker): Free online random name picker: draw winners with no repeats across rounds, pick students at random, split people into balanced groups or shuffle a list.
- [Text Cleaner](https://qilingtools.com/en/text-clean): Free online text cleaner: strip extra spaces and blank lines, rejoin lines broken by a PDF copy, convert full-width ↔ half-width and CJK ↔ Latin punctuation.
- [Find and Replace](https://qilingtools.com/en/text-replace): Free online find and replace: several rules applied in order, plain text or regex, case and whole-word options, a live match count and $1 capture groups.
- [Text to Speech](https://qilingtools.com/en/text-to-speech): Free text to speech: near-human AI voices run in your browser, unlimited, downloadable as WAV, in English and Chinese. System voices cover many more languages.
- [Online Timer](https://qilingtools.com/en/timer): Free online timer: countdown with presets, alarm and screen flash; stopwatch with laps; Pomodoro 25/5 cycles. Big digits, accurate in background tabs.
- [Time Zone Converter](https://qilingtools.com/en/timezone): Free online time zone converter and world clock: pick a time and see it in New York, London, Tokyo, Shanghai or any city, with UTC offsets and DST handled.
- [Chart Maker](https://qilingtools.com/en/chart): Free online chart maker: paste data from Excel or CSV to build bar, line, area, pie, donut and scatter charts, then download a 2× PNG or an editable SVG.
- [Chinese to Pinyin](https://qilingtools.com/en/pinyin): Free online Chinese to pinyin converter: tone marks, numbers or none, initials only, context-aware polyphones, surname readings and ruby annotation.
- [Simplified ↔ Traditional Chinese](https://qilingtools.com/en/zh-convert): Free online Chinese converter powered by OpenCC: Simplified ↔ Traditional for Taiwan, Hong Kong or OpenCC standard, with optional Taiwan vocabulary.
- [Signature Maker](https://qilingtools.com/en/image/signature): Free online e-signature tool: photograph a handwritten signature for a clean transparent PNG with paper and shadows removed, or draw one and export PNG or SVG.
- [Chinese Lunar Calendar](https://qilingtools.com/en/calendar): Free Chinese lunar calendar for 1900–2100: lunar dates, zodiac, stem-branch years, the 24 solar terms with exact times, festivals and a lunar date converter.
- [Morse Code Translator](https://qilingtools.com/en/morse): Free online Morse code translator: text to Morse and back, played as audio with adjustable WPM and tone, a flashing light, a WAV download, and space-bar keying.
- [Online Notepad](https://qilingtools.com/en/notepad): Free online notepad that autosaves in your browser: several notes, search, rename, undo delete, word count, Markdown preview, TXT/MD export and focus mode.
- [Typing Speed Test](https://qilingtools.com/en/typing-test): Free online typing test: WPM, CPM and accuracy over 30s, 60s, 120s or a full passage, with live error highlighting, a speed chart and personal bests.
- [Spin the Wheel](https://qilingtools.com/en/wheel): Free online spinning wheel: add weighted options, spin with a tick sound, see the history, remove winners, use presets, and share a wheel by link.
- [Days Until / Days Since](https://qilingtools.com/en/countdown): Free online days-until and days-since counter: add exams, holidays and anniversaries and see a live count to the second, with repeats and a share link.
- [Emoji Picker](https://qilingtools.com/en/emoji): Free online emoji picker: 1,100+ emoji in nine groups, searchable in English and Chinese — click to copy, pick a skin tone, see code points and shortcodes.
- [Flashcards](https://qilingtools.com/en/flashcards): Free online flashcards with SM-2 spaced repetition: grade each card Again, Hard, Good or Easy; several decks, CSV and Anki import, saved in your browser.
- [Kanban Board](https://qilingtools.com/en/kanban): Free online Kanban board: several boards with custom columns, cards with labels, due dates and checklists, drag and drop or keyboard moves, autosaved locally.
- [Split Bill](https://qilingtools.com/en/split-bill): Free online bill splitter for trips and dinners: add people and expenses, split equally, by share or by amount, and settle with the fewest transfers.
- [Annotate PDF](https://qilingtools.com/en/pdf/annotate): Free online PDF annotator: highlight, draw, add shapes, arrows, sticky notes and text boxes, then save as editable annotations or flatten them. Runs locally.
- [Invoice & Quote Generator](https://qilingtools.com/en/invoice): Make invoices, quotes, receipts and proforma invoices online: line items with discounts and tax, automatic totals, logo and signature, 3 templates, PDF.
- [Password Strength Checker](https://qilingtools.com/en/password-checker): Test password strength privately in your browser: entropy and crack time, detects common passwords, keyboard walks, dates and l33t, optional breach check.
- [Resume Builder](https://qilingtools.com/en/resume): Build a resume or CV online: photo, experience, education, skills and custom sections you can reorder, 4 templates, live A4 preview with page breaks, PDF.
- [Word Cloud Generator](https://qilingtools.com/en/word-cloud): Free word cloud maker: paste text or open a file, word counts with stopword removal, editable frequency table, heart, star or image shapes, PNG and SVG.
- [Create PDF Form](https://qilingtools.com/en/pdf/create-form): Make any PDF fillable: draw text fields, checkboxes, radio buttons, dropdowns, date and signature fields; set names, required flags and tab order. Free, local.
- [Habit Tracker](https://qilingtools.com/en/habit-tracker): Free habit tracker: daily or weekly goals, one-tap check-ins, current and best streaks, monthly calendar, yearly heatmap, stats, notes and JSON/CSV export.
- [Speech to Text](https://qilingtools.com/en/speech-to-text): Free online speech to text: talk into your mic for live transcription in 20+ languages with timestamps, auto punctuation, editing and TXT or SRT export.
- [Teleprompter](https://qilingtools.com/en/teleprompter): Free online teleprompter: your script scrolls at your WPM pace. Set font size, spacing and colors, mirror for beam-splitter glass, count down, go full screen.
- [Online Whiteboard](https://qilingtools.com/en/whiteboard): Free online whiteboard: infinite canvas, pressure-aware pen, highlighter, eraser, shapes, arrows, text and sticky notes, undo/redo, pages and PNG/SVG export.
- [Calendar Maker](https://qilingtools.com/en/calendar-maker): Free printable calendar maker: a year on one page or a page per month, with holidays, week numbers, events, monthly photos and themes. Print or export PNG.
- [Flowchart Maker](https://qilingtools.com/en/flowchart): Free flowchart maker: describe nodes and links in plain text (Mermaid flowchart syntax) for an auto-laid-out diagram with shapes and themes. SVG/PNG export.
- [Gantt Chart Maker](https://qilingtools.com/en/gantt): Free online Gantt chart maker: tasks with dates or durations, progress, milestones and dependencies, working days, drag to reschedule, PNG/SVG/CSV export.
- [Online Spreadsheet](https://qilingtools.com/en/sheet): Free online spreadsheet and CSV editor: SUM, AVERAGE and IF formulas with auto-recalc, sort, filter, find & replace, Excel copy-paste, CSV/TSV/JSON export.
- [Screenshot Annotator](https://qilingtools.com/en/image/annotate): Free screenshot annotator: paste with Ctrl+V, add arrows, boxes, numbered steps, highlighter and text, pixelate or blur secrets, crop, copy or save PNG/JPG.
- [Certificate Maker](https://qilingtools.com/en/certificate): Make award certificates in bulk: classic, gold, modern and simple templates, a pasted list of names, {name}/{award} placeholders, seal, PDF or PNG ZIP.
- [Class Timetable Maker](https://qilingtools.com/en/timetable): Make a class timetable online: Mon–Fri to Mon–Sun, periods with times, auto colors, quick fill, merged double periods, A4 landscape print, PNG, CSV and JSON.
- [Unit Price Calculator](https://qilingtools.com/en/unit-price): Compare products by unit price: per oz, lb, kg, L, item or sheet, with % off, spend-and-save, second-item discounts and buy-N-get-M deals. Finds the best value.
- [WeChat Article Formatter](https://qilingtools.com/en/wechat-format): Turn Markdown into WeChat Official Account articles: 8 themes, code highlighting, tables, nested lists, links as footnotes, one-click copy that keeps styles.
- [Business Card Maker](https://qilingtools.com/en/business-card): Design business cards: 9 front/back templates, US, EU, China and Japan sizes, logo, colors, vCard QR code, print-ready PDF with 3 mm bleed and crop marks.
- [Handwriting Practice Sheet Maker](https://qilingtools.com/en/copybook): Make printable handwriting sheets: Chinese tian/mi grids, pinyin grids, manuscript paper, English four-line paper, tracing or model-and-trace, PDF or PNG.
- [Chinese ID Number Validator](https://qilingtools.com/en/id-card): Validate Chinese ID numbers (GB 11643-1999): check digit, birth date, region, gender, age, zodiac; 15-to-18 upgrade; batch check with CSV. Runs locally.
- [Envelope & Address Label Printer](https://qilingtools.com/en/label-print): Print envelopes (DL, C5, C6, US #10, Chinese with postcode boxes) and A4/Letter label sheets (L7160, L7163, L7651, 5160) from CSV with {field} templates.
- [QR Code Art Generator](https://qilingtools.com/en/qr-art): Free styled QR code maker for URLs, Wi-Fi, vCards, email, SMS and maps: dot or diamond modules, custom eyes, gradients, logo, PNG/SVG/JPG and a scan check.
- [Seating Chart Maker](https://qilingtools.com/en/seating-chart): Make classroom, U-shape, round-table or conference seating charts: seeded random, by height, boy–girl, keep-apart/together rules, locks, rotation, print.
- [Batch File Renamer](https://qilingtools.com/en/batch-rename): Free bulk file renamer: find & replace with regex, prefixes, numbering, case, EXIF photo date, extensions. Live preview, conflict checks, ZIP or rename script.
- [Bingo Card Generator](https://qilingtools.com/en/bingo): Make printable bingo cards: 75-ball B-I-N-G-O, UK 90-ball tickets or custom word and emoji bingo, all unique, 1–6 per page, with a call sheet and caller.
- [Graph Paper Generator](https://qilingtools.com/en/graph-paper): Make printable paper: square grid, dot, isometric, hex, polar, log, engineering, music staff, guitar tab, Cornell notes, lined and calligraphy as vector PDF.
- [Printable Planner Maker](https://qilingtools.com/en/planner): Printable planner pages: daily, weekly, monthly, year at a glance, habit tracker, to-do, meal plan, budget and reading log, with auto dates for a month or year.
- [Word Search & Crossword Maker](https://qilingtools.com/en/word-puzzle): Make printable word search and crossword puzzles from your words and clues: diagonal and backwards words, compact numbered crosswords, answer keys, seeds.
- [Duplicate Photo Finder](https://qilingtools.com/en/image/duplicates): Find duplicate and similar photos in your browser: SHA-256 for identical files, perceptual hashes for resized or recompressed copies; keep the best, export CSV.
- [Decision Matrix](https://qilingtools.com/en/decision-matrix): Weighted decision matrix online: score options against criteria, set weights directly or by AHP pairwise comparison with CR, rank and test sensitivity.
- [Expense Tracker](https://qilingtools.com/en/expense-tracker): Free private expense tracker: categories, accounts, tags, currencies, monthly budgets, pie, trend and heatmap reports, recurring bills, CSV import. Stays local.
- [Markdown Slides](https://qilingtools.com/en/markdown-slides): Write slides in Markdown: --- splits slides, 9 themes, 16:9 or 4:3, code highlighting, columns, backgrounds, fragments, presenter view, PDF and HTML export.
- [PDF Form Mail Merge](https://qilingtools.com/en/pdf/form-merge): Fill a PDF form from CSV rows: auto-matched fields, checkboxes, radios, dropdowns, CJK text, optional flattening, one PDF per row or combined; export form data.
- [Email Signature Generator](https://qilingtools.com/en/email-signature): Create a professional HTML email signature: 8 templates, photo or logo, social icons, CTA banner and disclaimer, table-based for Gmail, Outlook and Apple Mail.
- [Invitation & Greeting Card Maker](https://qilingtools.com/en/invitation): Make invitations and greeting cards for weddings, birthdays, baby showers, parties and holidays: 12 templates, QR codes, one card per guest, PNG or PDF.
- [Text Analyzer](https://qilingtools.com/en/text-analyzer): Analyze text in depth: word and character frequency, n-grams, SEO keyword density, Flesch, Fog and SMOG scores, sentence lengths, MTLD and repeated phrases.
- [Brain Tests](https://qilingtools.com/en/brain-tests): Free quick brain tests: reaction time, sequence, number, verbal and visual memory, aim trainer, chimp test, Stroop test and Schulte tables, with personal bests.
- [Meeting Planner](https://qilingtools.com/en/meeting-planner): Find a meeting time across time zones: add cities and working hours, see overlaps on a 24-hour timeline, get best-time picks and export .ics or Google Calendar.
- [Reading Speed Test](https://qilingtools.com/en/reading-speed): Test your reading speed: original English and Chinese passages at three levels, a comprehension quiz, effective WPM vs. average, plus an RSVP speed reader.
- [Rename PDFs by Content](https://qilingtools.com/en/pdf/rename): Batch rename PDFs by content: put dates, invoice or order numbers, emails, totals, titles or labelled text into a name pattern; preview clashes.
- [Letter & Document Templates](https://qilingtools.com/en/doc-templates): Free fill-in templates: leave request, receipt, IOU, employment verification, authorization and resignation letters, plus Chinese formats. Print, PDF or copy.
- [Gift Ledger](https://qilingtools.com/en/gift-ledger): Free private gift ledger: log wedding, shower and birthday gifts received and given, see each person’s balance, get return-gift ideas and print a list.
- [Shift Schedule Maker](https://qilingtools.com/en/shift-schedule): Free shift scheduler: set staff, shifts and daily headcount, then auto-build a fair roster that respects rest and weekly-off rules. Rotations, print, CSV.
- [ZIP Compressor](https://qilingtools.com/en/zip): Free online ZIP tool: pack files or a whole folder into one zip, pick a compression level and optionally protect it with AES-256, all inside your browser.
- [Unzip Online](https://qilingtools.com/en/unzip): Free online zip extractor: open a zip with nothing installed, browse and preview what is inside, extract only what you need, use a password, fix garbled names.
- [ZIP Password](https://qilingtools.com/en/zip-password): Free online tool to password-protect a zip or strip the password from one you can open: AES-256 or ZipCrypto, with garbled filenames repaired on the way.
- [RAR / 7Z Extractor](https://qilingtools.com/en/unarchive): Free online extractor for RAR, 7Z, TAR, TAR.GZ, TAR.XZ, TAR.BZ2, CAB, ISO and more: browse the contents, preview files and extract what you need without WinRAR.
- [TAR Archiver](https://qilingtools.com/en/tar): Free online tar tool: pack files or a whole folder into .tar or .tar.gz with the folder structure intact, built in your browser and never uploaded.
- [Split / Join Files](https://qilingtools.com/en/split-file): Free online file splitter: cut a big file into .001 .002 parts by size or count to fit an attachment limit, and join the parts back together. Runs locally.
- [Excel Converter](https://qilingtools.com/en/excel-convert): Free online Excel converter: open an xlsx, read every worksheet and export it as CSV, TSV, JSON, a Markdown table or HTML. Date serial numbers become dates.
- [Word Converter](https://qilingtools.com/en/word-convert): Free online Word converter: read headings, lists, tables, images and footnotes out of a docx and export Markdown, single-file HTML or plain text.
- [PowerPoint Converter](https://qilingtools.com/en/ppt-convert): Free online PowerPoint converter: read each slide's title, bullet levels, tables, images and speaker notes out of a pptx and export Markdown, text or notes.
- [TXT to EPUB](https://qilingtools.com/en/txt-to-epub): Free online TXT to EPUB converter: chapters are detected to build the table of contents, legacy encodings are repaired, and you can add a cover and author.
- [EPUB Converter](https://qilingtools.com/en/epub-convert): Free online EPUB converter: read the whole book in reading order and export Markdown, plain text or a single-file HTML page, or print it to PDF. Parsed locally.
- [EPUB Metadata Editor](https://qilingtools.com/en/epub-meta): Free online EPUB metadata editor: change the title, author, language, publisher, description and subjects, replace the cover and repack a valid EPUB.
- [Peer-to-peer send](https://qilingtools.com/en/p2p): Free peer-to-peer file transfer: scan one QR code to pair a phone and a computer, then files go straight between them — no upload and no size limit.
- [OFD viewer](https://qilingtools.com/en/ofd): Free online OFD viewer: open the .ofd files used by Chinese e-invoices and official documents, convert them to searchable PDF or PNG, and extract the text.
- [China Phone Number Check](https://qilingtools.com/en/phone-check): Free checker for Chinese mobile numbers: validate the format, identify the carrier by prefix, flag MVNO, IoT and satellite ranges, and export them as CSV.
- [ICS Calendar File](https://qilingtools.com/en/ics): Free online ICS generator: build .ics files with times, location, recurrence and alarms for Apple Calendar, Outlook or Google, or read an .ics someone sent you.
- [Seal Extractor](https://qilingtools.com/en/image/seal): Free online seal extractor: lift a red or blue stamp off a scan into a transparent PNG, dropping paper, tint and specks. Solid colour, auto-trim, runs locally.