Privacy-First Browser Toolkit

Utility tools that run in your browser

Images, PDFs, calculators and QR tools. Your files stay on your device. No sign-up needed.

Find a tool Compress an image

What do you need to do?

Popular tasks

Start here if you already know what you need.

Compress a photo to 20 KBPortal and application form limit.Compress an imagePick a KB target or a quality level.Make a passport photoStandard exam and form sizes.Merge PDFsCombine documents in your order.Find a bank by IFSCBranch, address and payment flags.Create a QR codePNG and SVG, updates as you type.

100% Client-Side Privacy

File tools process data in your browser tab. Your files are not sent to a server.

No Upload Queue

Processing starts on your device, so there is no file transfer or cloud processing queue.

Free, Clean & Watermark-Free

No account, fees, ads, watermarks or deceptive download buttons.

Age calculator

Exact years, months, days and next birthday countdown.

EMI calculatorFinance

Calculate loan instalment, total interest, and repayment schedule.

SIP calculatorFinance

Mutual fund wealth projection with transparent month-end math.

GST calculator

Inclusive and exclusive GST for one invoice line.

Simple interest calculatorAccounting

Interest, total payable and the monthly cost of a flat-rate loan.

Compound interest calculatorAccounting

Any compounding frequency, with the effective annual rate and a yearly schedule.

CAGR calculatorAccounting

Annualised growth from a start value, an end value and a period.

Depreciation calculatorAccounting

Straight line and written down value with a year-by-year schedule.

Break-even calculatorAccounting

Units and revenue to cover fixed costs, with contribution margin.

Percentage calculatorMaths

A percent of a number, a share, or the change between two values.

Statistics calculatorMaths

Mean, median, mode, quartiles and both standard deviations.

GCD and LCM calculatorMaths

Greatest common divisor and least common multiple of any list.

Quadratic equation calculatorMaths

Roots, discriminant, nature of roots and the vertex.

Unit converterScience

Length, mass, volume, area, speed, pressure, energy and temperature.

Ideal gas law calculatorScience

Solve PV = nRT for whichever of pressure, volume, moles or temperature is missing.

Molarity calculatorScience

Moles from mass, and dilution with C₁V₁ = C₂V₂.

pH calculatorScience

pH, pOH and hydroxide concentration in either direction.

Ohm's law calculatorScience

Voltage, current, resistance and power from any two known values.

NPV and IRR calculatorAccounting

Appraise a project from its cash flows and a discount rate.

Loan amortization scheduleAccounting

Every instalment split into interest and principal.

Margin and markup calculatorAccounting

The same sale as two different percentages.

Financial ratios calculatorAccounting

Current, quick, debt-equity, ROE and interest coverage.

Fraction calculatorMaths

Exact fraction arithmetic with the mixed number and decimal.

Logarithm calculatorMaths

Any base, with ln, log₁₀ and antilog.

Scientific notation converterMaths

Standard and engineering form, plus the number in words.

Prime factorization calculatorMaths

Prime factors, divisors and a primality check.

Number to words converterMaths

Cheque-ready words in the Indian or international system.

Density calculatorScience

Mass, volume and density in three unit systems.

Speed, distance and time calculatorScience

Solve any one, with km/h and pace.

Half life calculatorScience

Decay, remaining amount and the decay constant.

Force calculatorScience

F = ma, plus weight under standard gravity.

Kinetic and potential energy calculatorScience

½mv², mgh and Fd with the substituted formula.

Calorimetry calculatorScience

Heat, mass, specific heat and temperature change.

Wavelength and frequency calculatorScience

v = fλ for light, sound and radio.

Ratio and proportion calculatorMaths

Simplify ratios and solve proportions.

Roman numerals converterMaths

Numbers to MCMXCIV and back.

Linear equation calculatorMaths

Solve ax + b = c with the working shown.

Permutation and combination calculatorMaths

nPr, nCr and factorials.

Area calculatorMaths

Rectangle, circle, triangle and trapezium.

Volume calculatorMaths

Cube, box, cylinder, sphere and cone.

Working days calculatorTime

Business days between dates, minus weekends and holidays.

Time duration calculatorTime

Hours between times and timesheet totals.

Sector and arc calculatorMaths

Area, arc and chord from a radius and angle.

Frustum calculatorMaths

Truncated cone volume, surface and litres.

Frequency table calculatorMaths

Weighted mean and standard deviation from counts.

Mole calculatorScience

Grams, moles and particles, with Avogadro’s number.

Combined gas law calculatorScience

P₁V₁/T₁ = P₂V₂/T₂, solved for the missing term.

Resistor calculatorScience

Series and parallel resistance totals.

Regular polygon calculatorMaths

Area, apothem and angles from the sides and edge.

Simultaneous equations calculatorMaths

Two unknowns by Cramer’s rule, all three cases apart.

Z-score calculatorMaths

Standard score and normal percentile.

Projectile motion calculatorScience

Range, apex and flight time; air resistance ignored.

Probability calculatorMaths

Chance, complement, odds and independent events.

Molar mass calculatorScience

Formula to molar mass with the element breakdown.

Dilution calculatorScience

C₁V₁ = C₂V₂ and the solvent to add.

Momentum calculatorScience

p = mv and collision outcomes with energy loss.

Date difference calculatorTime

Years, months and days between two dates.

Business day calculatorTime

Add or subtract working days from a date.

Rounding calculatorMaths

Significant figures, decimal places and 50-paise rounding.

Matrix calculatorMaths

Determinant, trace and inverse with the identity check.

Discount calculator

Stacked discounts with the effective percentage.

EOQ calculator

Economic order quantity and orders per year.

Payback period

When the cumulative cashflow turns positive.

Barcode generatorNew

Code 128B and EAN-13, check digit computed, quiet zone included.

SVG optimizerNew

Strip comments, editor attributes and dead decimals — render stays identical.

Word metadata removerNew

Author, last editor and company blanked in a .docx.

Plagiarism checkerNew

Overlap against your sources, sentence by sentence — offline, no web search.

AI text humanizerNew

Plain words instead of AI phrasing, filler openers gone, em dashes thinned.

AI watermark removerAI

Invisible characters and hidden Unicode tags in copied text — decoded, then removed.

JSON formatterNew

Validate, pretty-print, minify and sort keys, with the error line.

Base64 encoder and decoder

Text or file, URL-safe alphabet, hex view for binary payloads.

JWT decoder

Header, payload and claim times — with what is not verified.

JWT encoderNew

Sign an HS256 token with a secret that stays in the tab.

Hash generator

MD5, SHA-1, SHA-256 and SHA-512, plus checksum comparison.

YAML ↔ JSON converterAdvanced

Anchors and merge keys handled by a real parser.

JSON ↔ CSV converter

RFC 4180 quoting, delimiters and row checks.

AES-256 encrypt and decryptAdvanced

Passphrase encryption with PBKDF2 and GCM.

Regex tester

Matches, groups and a replace preview with a real time limit.

Regex generatorDev

Describe what to allow; get an explained pattern.

Cron expression parser

Field meanings and the next five runs.

Unix timestamp converter

Seconds, milliseconds and ISO 8601 with the unit explicit.

Colour converter

HEX, RGB, HSL and WCAG contrast verdicts.

UUID generator

v4 random and v7 time-ordered, in bulk.

Random string generator

Passwords and tokens with real entropy in bits.

Line-by-line comparison with a unified diff export.

Case converter and slugs

camelCase, snake_case, kebab-case and URL slugs.

Number base converter

Binary, octal, decimal, hex and base36 with BigInt.

Semver compare

Which release version is newer, prerelease rules included.

Developer shelf

One page with the small tools you keep reopening.

All developer tools

Fifty-two tools for encoding, hashing, runtimes and diffs.

bcrypt generator

Hash with a real bcrypt cost factor, then verify it.

chmod calculator

Permissions as checkboxes, octal and symbolic.

CIDR calculator

Network, broadcast and host ranges for IPv4 and IPv6.

curl to fetch

Turn a curl command into fetch(), flags that are dropped included.

Data URI converter

File to data URI and back, with the size cost shown.

ENV to JSON

Parse a .env file into JSON, duplicates reported.

gitignore generator

A .gitignore for your stack, grouped by source.

HMAC generator

HMAC with WebCrypto; the secret stays in the tab.

HTML entity converter

Encode and decode entities, with a rendered preview.

HTTP status codes

Every code with what it means and when to use it.

JSON Schema validator

Draft-04 through 2020-12, errors by JSON pointer.

Check a signature against a secret or key — real verification.

Lorem ipsum generator

Words, sentences or paragraphs, with a seed.

Lua playground

Lua 5.4 in WebAssembly, with real runtime errors.

Markdown table generator

Build a table and copy the Markdown.

Mock JSON generator

Synthetic records from a schema or a preset.

SQL formatter

Re-indent SQL by dialect without touching strings.

SQL playground

Run SQL against SQLite in the browser.

Sort, dedupe, trim and count lines in one page.

TOML to JSON

TOML 1.0 both ways, with line numbers on errors.

TypeScript playground

Transpile TS and see syntax errors — not type checks.

ULID generator

Sortable identifiers with the timestamp decoded.

URL encode and decode

Component or full URL, with the query breakdown.

Word counter

Words, characters and sentences, live as you type.

XML formatter

Format and validate well-formedness, with line errors.

How the privacy claim is kept honest

File tools use the browser's own decoders and encoders: files are read with the File API, processed on a canvas or with a bundled library, and the download is created from memory. The only network requests during a job are the static engine files. You can verify this in your browser's network panel.

The IFSC lookup is different by nature: it downloads a published dataset snapshot once and searches it locally. That file is public data, not your input.

Questions

Do I need an account or subscription?

No. There is no sign-up, no paywall, and no watermark on any tool.

Do my files leave my device?

No. Image and PDF processing runs completely in your browser. The IFSC lookup downloads a static dataset snapshot once and searches it locally.

How does the PIN code finder get its data?

It queries a free public mirror of the India Post directory (api.postalpincode.in) on every search, so the answer comes from the directory rather than a bundled list that goes stale as post offices open and close. If the mirror rate-limits a request, the page says so instead of guessing.

Does the site use trackers or advertising?

Analytics loads only if you allow it. Your files and tool inputs stay in your browser. Advertising is off unless separately enabled.