Encoders
Encoders turn text or images into another representation, such as Base64, image data URIs, Base64URL, or percent-encoded URLs. Decoders reverse that step. Processing stays on your device.
Popular in Encoders
Curated starting points in this category, not a live ranking.
AES Encrypt Decrypt
AES encrypt decrypt online. Encrypt or decrypt UTF-8 text with AES-GCM 256 in your browser, or generate an RSA-OAEP key pair. Nothing is uploaded.
Base64 Encoder & Decoder
Online Base64 encoder and decoder. Encode or decode UTF-8 text in your browser, including Hindi, emoji, and other Unicode. Supports standard Base64 and Base64URL. Copy or download the result — nothing is uploaded.
Hash Generator
Online hash generator. MD5, SHA-256, HMAC, and bcrypt hash or compare in your browser from UTF-8 text or a small file. Nothing is uploaded.
HTML Encoder & Decoder
HTML encoder online. Encode or decode HTML entities in your browser — named, hex, or decimal. Nothing is uploaded.
Tools in Encoders
Related Formatters
Nearby utilities people often open next.
JSON Formatter & Minifier
JSON formatter online: beautify, minify, and validate JSON in your browser. Tree view included — no signup. JSON stays on your device.
Code Formatter & Beautifier
Online code formatter and beautifier. Format JavaScript, TypeScript, JSON, HTML, and CSS in your browser. Copy or download the result — nothing is uploaded.
SQL Formatter & Beautifier
Online SQL formatter and beautifier. Pretty-print or compact SQL in your browser for PostgreSQL, MySQL, SQL Server, BigQuery, and more. Queries are never executed or uploaded.
Related categories
- FormattersOnline formatters and beautifiers for code, SQL, and structured data. Format JavaScript, TypeScript, HTML, CSS, JSON, and SQL privately in your browser.
- Developer ToolsFree online developer tools for JWT, regex, cron, User-Agent parsing, IP conversion, and CIDR math. Browser-based utilities with no signup.
- Text ToolsOnline text tools including a Markdown editor with live preview, an online notepad, a Unicode-aware text and character counter, a typing test with a live visual keyboard, and a side-by-side text compare and diff checker. Private, browser-based utilities.
Related guides
Frequently asked questions
- Is Base64 encoding private?
- Yes. Encode and decode stay in the page. The text Base64 tool does not write input to storage. The image converter can keep this browser’s last file so refresh does not wipe it; nothing is uploaded.
- Can I hash a password here?
- Use the hash generator’s bcrypt mode for password hashes. MD5 and SHA on that page are checksums, not password storage. HMAC keys and bcrypt passwords are not saved on refresh.
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