developer tools

QuickDevKit

Fast, private developer tools that run entirely in your browser. No accounts, no uploads, nothing tracked — pick a tool and go.

~/quickdevkitruns locally
13
Tools
100%
Client-side
$0
Free, no sign-up
6
Guides
// text
Word Counter
~/text/word-counter
Words, characters, sentences & reading time
Character Counter
~/text/char-counter
Characters, lines & true UTF-8 byte size
Case Converter
~/text/case-converter
camelCase, snake_case, Title Case & more
Lorem Ipsum
~/text/lorem-ipsum
Placeholder text by paragraph, sentence or word
// json
JSON Formatter
~/json/formatter
Pretty-print, minify & validate JSON
JSON Diff
~/json/diff
Compare two objects by key path
// encode
Base64
~/encode/base64
Encode & decode, with a URL-safe option
URL Encoder
~/encode/url
Percent-encode & decode text for URLs
JWT Decoder
~/encode/jwt
Read a token’s header & payload
// generate
UUID Generator
~/generate/uuid
Random v4 UUIDs, in bulk
Hash Generator
~/generate/hash
SHA-1 / 256 / 384 / 512 digests
Timestamp Converter
~/generate/timestamp
Unix epoch ↔ human dates
// regex
Regex Tester
~/regex/tester
Live matches, capture groups & a cheat sheet
// guides
Text encoding explained
~/guides/text-encoding
ASCII, UTF-8, URL encoding & Base64
Regular expressions guide
~/guides/regex
A practical, plain-English walkthrough
JWTs in practice
~/guides/jwt-security
Signing, verifying & common mistakes
Choosing a UUID version
~/guides/choosing-a-uuid
v4, v7 & your database
Hashing explained
~/guides/hashing-explained
Checksums, passwords & HMAC
Working with timestamps
~/guides/working-with-timestamps
Time zones, ISO 8601 & monotonic clocks