26 tools · v1.0.0-alpha

whittle your workflow down to what matters.

small sharp tools for developers. converters, formatters, validators, generators. runs locally in your browser. no signup, no ads, no dark patterns.

// popular this week

all 26 tools →
json formatter
{"a":1,"b":[2,3]}"a": 1, "b": [2, 3]
regex tester
/\d+/gorder 42 ships 2d
jwt decoder
eyJhbGc.eyJzdWI.XdaY8sub: alice · exp: 1h
base64
hello, worldaGVsbG8sIHdvcmxk
cron parser
*/5 9-17 * * 1-5every 5 min, weekdays
uuid generator
v4 · v7 · nanoidbulk · custom format

// browse by category

$whittly ls--by-category --sort=count
converttimestamp converter·yaml ↔ json·csv ↔ json·+811formatjson formatter·sql formatter·html formatter·+25encodebase64·url encoder·hash generator·+47generateuuid generator·lorem ipsum·password generator·+14texttext diff·case normalizer·regex tester·+36networkcidr calculator·dns lookup·http status3imageimage → webp·svg optimizer2datacron parser·quartz cron·curl converter·+25
// pro · from $6/mo (390 ₽)
one step
further.

batch convert, call the api, save presets — for workflows where one file at a time isn't enough.

see plans →
$catpro.txt
# pro tier  ·  $6/mo (390 ₽)  ·  $49/yr (2 900 ₽)
batch        · process up to 500 items at once
large_files  · up to 100 MB per file
history      · persistent, synced across devices
presets      · save and reuse your settings

# api tier  ·  $24/mo (1 990 ₽)  ·  $199/yr (14 900 ₽)
api_keys     · call any tool programmatically
requests     · 50,000 per month
cli          · integrate into ci/cd pipelines
// history
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