About SheetEdit Tools
SheetEdit Tools is a free online tool collection. We aim to provide practical, secure, and easy-to-use web-based tools. All tools run in your browser; no data is uploaded to our servers, protecting your privacy.
Our Mission
We believe everyday tools should be simple, free, and accessible. Whether you're a student, professional, creator, or developer, you can find the paper templates, barcode generators, unit converters, dev tools, and more you need—no registration, no installation, just open and use.
Paper Templates
Templates for A4, A5, 16K, Letter, and other paper sizes, including:
- Grid paper – for math, sketching, and diagrams
- Lined paper – for notes and writing
- Dot grid – for bullet journals and planners
- Cornell notes – for structured note-taking
- Tianzi / Mi grid – for Chinese calligraphy practice
- Staff paper – for music notation
- And more – blank, graph, hexagonal, comic panels
Preview, print, or export to PNG/PDF directly from your browser.
Barcode & QR Code Tools
- Barcode generator – CODE128, EAN-13, UPC, CODE39, Codabar, MSI, and more. Export PNG or PDF.
- QR code generator – Encode text, URLs, contacts. Export PNG or PDF.
- Data Matrix – 2D barcode for logistics, electronics. Export PNG or PDF.
- PDF417 – Stacked barcode for IDs, boarding passes. Export PNG or PDF.
- Aztec Code – For transport tickets, boarding passes. Export PNG or PDF.
- WiFi QR – Generate QR codes to share WiFi credentials. Scan to connect.
- vCard QR – Share contact info as a scannable QR code.
- Contact QR – Phone, SMS, email, or location QR codes for one-tap actions.
All generation runs in your browser. No data is uploaded to our servers.
Color Tools
- RGB color picker – Adjust R, G, B and H, S, V values with live preview. Supports HEX input and copy.
- Standard colors table – Browse common colors with HEX and RGB values. Click to apply.
Color selection and conversion run locally. Color cache is stored only in your device's localStorage.
Unit Converters
- Basic units – Temperature, length, weight, area, volume
- Time & speed – Seconds, minutes, hours, days, years; m/s, km/h, mph, knots
- Physics – Angle (degree, radian, grad), pressure (Pa, bar, psi, atm, mmHg), energy (J, cal, kWh)
- Data & number – Data storage (byte, KB, MB, GB, TB, PB), number base (binary, octal, decimal, hex), timestamp
- Number format – Roman numerals, scientific notation
All conversions run in your browser. No data is sent to our servers. Conversion factors follow the International System of Units (SI) and common standards.
Text Tools
- Markdown editor – Edit Markdown in your browser. Open local .md/.txt files and export to Markdown. All editing runs locally; no content is uploaded to our servers.
Dev Tools
- JSON format – Format and minify JSON with syntax highlighting
- JSON validate – Validate JSON syntax
- JSON Diff – Compare two JSON documents
- Base64 encode/decode – Encode and decode Base64
- URL encode/decode – URL encoding and decoding
- UUID generator – Generate UUID v4
- Hash – MD5, SHA-1, SHA-256, and more
- JWT decoder – Decode JWT payloads
- HTML entity – HTML entity encode/decode
- Regex tester – Test regular expressions
- Lorem Ipsum – Generate placeholder text
- Case converter – Camel, snake, kebab, and more
- Text stats – Word count, line count, character count
- JSON ↔ YAML – Convert between JSON and YAML
All processing runs in your browser. No data is uploaded to our servers.
Image tools
- Format conversion – Convert between common formats (e.g. SVG, PNG, JPG, WebP, ICO) and vectorize or rasterize where the tool supports it, directly in the browser.
- Local processing – Image bytes are processed on your device; they are not uploaded to our servers for conversion.
Privacy & Data Security
- Local processing: All calculations, generation, and conversion happen in your browser. No data is sent to our servers.
- No account required: Use all features without registration or login.
- Privacy policy: We have a detailed Privacy Policy explaining data collection, cookie use, and third-party services (e.g., advertising). Please review it for full details.
- Article index: Browse the Article Index for all guides and tutorials.
Operator
SheetEdit Tools is operated by an independent developer, committed to providing free, practical online tools for users worldwide.
For questions, feedback, or partnership inquiries, see Contact Us.