CodeCrush

~/codecrush/tools

Free tools, right in your browser.

Nineteen utilities for work and code: calculate Brazilian severance, vacation pay, 13th salary and net salary, generate test CPFs, passwords and disposable emails, format JSON, decode JWTs — all without leaving the browser.

  • --local
  • --no-sign-up
  • --no-upload
  • --free

## tools

$ severance --calculate

CLT Severance

Simulate every severance item: salary balance, notice period, vacation, 13th salary and the FGTS penalty — by type of dismissal.

  • by dismissal type
  • FGTS penalty
  • INSS/IRRF 2026
  • full breakdown
Use it now100% in the browser

$ cpf --generate --validate

CPF and CNPJ Generator

Generate valid Brazilian CPF and CNPJ numbers for software testing, validate existing ones and export in bulk.

  • bulk generation
  • validates
  • company lookup
  • CSV/JSON export
Use it now100% in the browser

$ ip --detect

My IP

See your public IP address instantly, along with everything your browser hands over — and what it reveals about you.

  • IPv4/IPv6
  • browser data
  • one-click copy
Use it nownothing is stored

$ email --temporary

Temporary Email

Create a disposable address with no sign-up and receive messages instantly — far from your real inbox and its spam.

  • no sign-up
  • instant delivery
  • auto-refresh
  • disposable
Use it nowdisposable inbox

$ hours --sum --overtime

Hours Calculator

Add hours and minutes without arithmetic slips, close out the month and work out what your overtime is worth.

  • hh:mm addition
  • monthly total
  • overtime 50/100%
Use it now100% in the browser

$ count --all

Character Counter

Count characters, words and sentences in real time — with the limits for X/Twitter, meta descriptions, SMS and more.

  • real time
  • platform limits
  • reading time
Use it now100% in the browser

$ vacation --calculate

CLT Vacation Pay

Work out your vacation pay with the constitutional one-third bonus, the sold-days option and the 2026 deductions.

  • 1/3 bonus
  • selling days
  • INSS/IRRF 2026
Use it now100% in the browser

$ 13th --installments

13th Salary

See the first and second installment of your 13th salary, the proportional months and what is left after deductions.

  • 1st and 2nd installment
  • proportional months
  • INSS/IRRF 2026
Use it now100% in the browser

$ password --strong

Password Generator

Generate strong passwords with the browser’s own cryptography, or memorable passphrases — nothing leaves your machine.

  • Web Crypto
  • passphrases
  • strength meter
Use it now100% in the browser

$ wa --link

WhatsApp Link

Create a wa.me link with a ready-made message to share your WhatsApp in a bio, website or social profile.

  • prefilled message
  • live preview
  • one-click copy
Use it now100% in the browser

$ insurance --installments --2026

Unemployment Insurance

Find out your installment amount under the 2026 table and how many installments you are entitled to receive.

  • 2026 table
  • installment count
  • rules per claim
Use it now100% in the browser

$ salary --net --2026

CLT Net Salary

Find out what actually lands in your account under the 2026 INSS and income-tax tables — and what your hour is worth.

  • INSS + IRRF 2026
  • hourly rate
  • full breakdown
Use it now100% in the browser

$ salaries --compare

Tech Salaries in Brazil

Compare your salary with the Brazilian tech market by role, seniority level and region.

  • by role
  • seniority
  • region
Use it now100% in the browser

$ jwt --decode

JWT Decoder

Decode the header and payload of JWT tokens and inspect claims and expiry without sending anything to a server.

  • header + payload
  • live exp countdown
  • offline
Use it now100% in the browser

$ json --format

JSON Formatter

Format, validate and repair JSON with errors explained in plain language — and convert it to CSV and YAML.

  • clear errors
  • repairs
  • → CSV/YAML
  • minifies
Use it now100% in the browser

$ ai --recommend

Which AI to Use?

Find the best AI model for each task — coding, writing, studying — with a free option and a cheap API pick.

  • by task
  • free option
  • API pricing
  • editorial picks
Use it nowindependent picks

$ tokens --count --cost

Token Counter

Estimate how many tokens your text consumes and what it costs on the GPT, Claude, Gemini and DeepSeek APIs.

  • GPT · Claude · Gemini
  • cost in BRL
  • FX + IOF tax
Use it nowyour text stays here

$ mei --das --2026

MEI Monthly Tax (DAS)

See the exact amount of your 2026 DAS by activity, how the slip breaks down (INSS + ICMS/ISS) and the yearly cost of being a MEI.

  • by activity
  • INSS + ICMS/ISS
  • truck-driver MEI
  • due on the 20th
Use it now100% in the browser

$ mei --limit --forecast

MEI Revenue Limit

Track the R$ 81,000 limit: percentage used, headroom left, year-end forecast and your disqualification risk.

  • usage bar
  • Dec/2026 forecast
  • pro-rated
  • the 20% rule
Use it now100% in the browser

// open slot

Missing a tool you need?

Tell us which utility would make your day easier — the most requested ones make it onto the workbench.

Suggest it on WhatsApp