Free tools, right in your browser.

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

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

• clear errors
• repairs
• → CSV/YAML
• minifies

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

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

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

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%

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

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

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

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

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

• by role
• seniority
• region

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

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

Paste the job description and your résumé: see which terms from the ad are missing, whether the expected sections exist and what to fix before applying.

• job match
• missing terms
• no AI, no upload
• format check

Generate valid Brazilian CPF numbers for software testing, pick the issuing state and validate any number with the maths explained.

• CPF by state
• validates step by step
• bulk generation
• CSV/JSON export

Generate valid CNPJ numbers in both formats, validate the check digits and look up real company data in the Receita registry.

• 2026 alphanumeric
• validates step by step
• company lookup
• bulk generation

Generate up to 1000 CPFs, CNPJs and full fictional records at once and export them as JSON, CSV or SQL INSERT statements.

• up to 1000 at once
• name, email, postcode
• SQL export
• CPF + CNPJ together

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

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

• Web Crypto
• passphrases
• strength meter

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

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

Shrink your images, resize them and convert to WebP, JPG or PNG — in batches and without uploading a single file to any server.

• batch mode
• converts to WebP
• resizes
• nothing is uploaded

Wipe GPS, camera, dates, software and author from your JPG photos — in batches, no upload. Raw bytes, no recompression, no server.

• strips GPS
• batch photos
• no recompression
• nothing uploaded

Turn a PDF into JPG or PNG — page by page, with the DPI of your choice and a ZIP download. 100% in the browser, no upload.

• page by page
• 72 to 300 DPI
• per-page selection
• ZIP batch

Extract text from photos, scans and screenshots with OCR in Portuguese — in the browser, no upload. Model downloaded once and cached.

• PT · EN · PT+EN
• per-image confidence
• cached model
• nothing uploaded

Turn several images into a single PDF, reorder the list and pick A4 or Letter. No recompression, no upload — all in the browser.

• merges JPG/PNG
• draggable order
• A4 or Letter
• no recompression

Cut the background out of photos automatically with a lightweight AI in the browser — in batches, no upload. Model downloaded once; PNG output with transparency.

• AI in the browser
• batch photos
• transparent PNG
• nothing uploaded

Shrink your PDF by 15-70% — with text preserved (selectable) or aggressive mode (becomes image). 100% in the browser, no upload.

• two modes
• text preserved
• aggressive 50-70%
• nothing uploaded

Turn tables from PDFs into CSV or XLSX by character position — with a preview of the result. 100% in the browser, no upload.

• CSV and XLSX
• row preview
• per-page tables
• nothing uploaded

Build your professional signature, see the live preview and paste it straight into Gmail or Outlook — with the table-based HTML email clients actually render.

• live preview
• pastes formatted
• Gmail and Outlook
• ready HTML code

Work out a percentage of a value, what percent one number is of another, the change between two values, increases/discounts and the rule of three — with every step spelled out.

• 5 modes
• step-by-step
• accepts 1,234.56
• rule of three

Draw names, numbers, groups or a random order — with a visible seed, so anyone can reproduce the draw and check that it was fair.

• auditable seed
• names and numbers
• makes groups
• no repeats

Count days between two dates, add or subtract deadlines in business days, work out an exact age and check the Brazilian national holidays of the year.

• business days
• Brazilian holidays
• exact age
• deadline in business days

Convert length, mass, temperature, area, volume, speed, time and data storage — with the value shown in every unit at once.

• 8 quantities
• MB vs MiB
• imperial and metric
• full table