Viewers & developer tools
39 free tools with no daily limits. Open files and work with data without installing anything — nothing is uploaded.
File viewers · 23
Open PDF, Word, Excel, email, contact, calendar and image files right in your browser — no software to install.
PDF Viewer
Open and read PDF files online with zoom and page navigation. Nothing is uploaded — the PDF opens on your device.
Word Document Viewer
View DOCX files online without Microsoft Word. Headings, lists, tables and images are shown. Private.
Excel Viewer
Open XLSX spreadsheets online and browse every sheet as a table — no Excel required. Private, in-browser.
CSV Viewer
Open CSV and TSV files as a sortable, searchable table in your browser. Handles large files. Private.
JSON Viewer
Explore JSON files as a collapsible tree with search. Great for API responses and exports. Private.
XML Viewer
View XML files as a formatted, collapsible tree — feeds, sitemaps, config and data exports. Private.
Markdown Viewer & Editor
Open or paste Markdown and see it rendered live, with tables, code and task lists. Private.
EML Viewer
Open .eml email files online and read the message, headers and attachments. Nothing is uploaded.
MSG Viewer
Open Outlook .msg files on Mac, Windows, Linux or phone — read the email and save attachments.
MBOX Viewer
Browse an MBOX mailbox — Gmail Takeout, Thunderbird, Apple Mail — and search every message. Private.
vCard Viewer
Open VCF contact files and see every contact — names, phones, emails and addresses. Private.
ICS Calendar Viewer
Open .ics calendar files and invites to see every event with date, time and location. Private.
TIFF Viewer
View TIFF and multi-page TIFF images in any browser — scans, faxes and print files. Private.
HEIC Viewer
Open iPhone HEIC photos on Windows, Android or any browser — no app or codec needed. Private.
PowerPoint Viewer
Open PPTX presentations online and flip through the slides — text, images and backgrounds. No PowerPoint needed.
XPS Viewer
Open XPS and OXPS documents from Windows on a Mac, phone or any browser. Private — nothing is uploaded.
PST Viewer
Open Outlook PST files without Outlook: browse folders, search and read emails, and save attachments. Private.
OST Viewer
Read Outlook OST offline mailbox files without Exchange or the original account. Browse, search and save emails.
OLM Viewer
Open Outlook for Mac OLM archives on Windows or any browser: read emails by folder and save attachments.
PST Analyzer
Analyse an Outlook PST, OST or OLM: email counts per folder and year, top senders, attachments and contacts.
MBOX Counter
Count the emails in an MBOX file instantly — plus attachments, date range, top senders and messages per year.
Gmail Takeout Viewer
Open your Google Takeout Gmail export (.mbox or the Takeout .zip) and read, search and download your emails.
Skype Chat Viewer
Read your exported Skype conversations: open the export .tar, browse chats, search and save them as text.
Developer & text tools · 16
JSON formatter, Base64, hashes, QR codes, regex tester, password generator and more — instant and private.
JSON Formatter & Validator
Format, beautify, minify and validate JSON with clear error messages. Instant, private, works offline.
Base64 Encoder & Decoder
Encode text or files to Base64 and decode Base64 back to text or a file. UTF-8 safe and private.
URL Encoder & Decoder
Percent-encode or decode URLs and query strings, and break a URL into its parts. Instant and private.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512, SHA-3 and CRC32 hashes of text or files. Verify checksums.
Password Generator
Create strong random passwords and passphrases with the length and characters you choose. Private.
UUID Generator
Generate random UUID v4 or time-ordered UUID v7 identifiers in bulk. Copy or download. Private.
Lorem Ipsum Generator
Generate lorem ipsum placeholder text by paragraphs, sentences or words, as plain text or HTML.
Regex Tester
Test JavaScript regular expressions live with match highlighting, capture groups and replace preview.
Unix Timestamp Converter
Convert Unix epoch timestamps to human dates and back, in UTC and your time zone. Seconds or ms.
Text Diff Checker
Compare two texts and highlight every added, removed and changed line or word. Private and instant.
Color Picker & Converter
Pick a color and convert between HEX, RGB, HSL, HSV and CMYK. Check WCAG contrast and get shades.
QR Code Generator
Create QR codes for links, Wi-Fi, email, phone or text. Custom colors, PNG or SVG download. No sign-up.
Word Counter
Count words, characters, sentences and paragraphs, with reading time and keyword density. Private.
Case Converter
Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case and more.
JWT Decoder
Decode JSON Web Tokens to inspect the header, payload and expiry. Tokens never leave your browser.
Screen Recorder
Record your screen, a window or a browser tab with audio — free, no watermark, no install, no upload.