Encoding & Crypto — Guides & Articles
How to Generate an HMAC: SHA-256, SHA-384 and SHA-512
Published 2026-07-21
Generate an HMAC the right way: pick SHA-256, SHA-384 or SHA-512, enter UTF-8 or hex key and message bytes, and copy hex or Base64 output from a local tool.
How to Decipher a Hill Cipher Without Manual Math
Published 2026-07-21
Deciphering a Hill cipher requires matrix math and modulo-26 arithmetic. Use a free online Hill Cipher Decoder to encrypt or decrypt A-Z text instantly with…
Base100 Encoder: Turn Text Into Emoji Symbols Online
Published 2026-07-21
A Base100 encoder maps each UTF-8 byte to a single emoji from the original Base100 set. Use our free online tool to encode text or decode Base100 back to…
Convert Hex Files to Readable Text Without Errors
Published 2026-07-20
Turn hexadecimal files into plain text instantly with strict UTF-8 validation and explicit separator rules—no silent replacements, no guesswork.
Gzcompress Online: Compress and Decode Text in Your Browser
Published 2026-07-20
Run gzcompress-style text compression online without PHP. Encode UTF-8 into Base64-wrapped RFC 1952 gzip bytes and decode gzip Base64 back to readable text…
Convert Any File to Base64 Without Uploading It
Published 2026-07-20
Encode local files up to 10 MB as strict Base64 or decode Base64 back into a downloadable file—all in your browser, no uploads, no data sent.
How to Calculate CRC-32 Checksums for Data Integrity
Published 2026-07-20
Calculate CRC-32 checksums from UTF-8 text or hex bytes instantly with fixed ISO-HDLC parameters — get an eight-digit result for error detection in files,…
How to Calculate Checksum: XOR-8 and Modbus LRC
Published 2026-07-20
A clear walkthrough on calculating XOR-8 BCC, Modbus ASCII LRC, and byte-sum modulo 256 checksums from text or hex using a free online calculator.
Convert Base 10 to Hex Quickly with Base64 to Hex Converter
Published 2026-07-20
Convert decimal (base 10) numbers to hexadecimal (base 16) instantly using a free online tool. Learn the exact steps, avoid common mistakes, and verify results.
Decode Base58 Strings Back to Readable Data in One Click
Published 2026-07-20
Base58 decoding converts Bitcoin-style strings into exact hexadecimal bytes and readable UTF-8 text. Use this free online tool to decode raw Base58…