BangBangYOUR EVERYDAY TOOLBOX
All tools201
Browse every tool included in BangBang. Each page explains the task, how to use it and how its workspace is designed.
Coming to the App Store. Download will be available after release.
Image Compressor
Reduce the file size of one or more images while preserving acceptable visual quality.
ImagesImage Format Converter
Convert an image to the required file format without changing its visible content.
ImagesImage Resizer
Resize one or more images to exact pixel dimensions or common platform sizes.
ImagesImage Cropper
Set horizontal and vertical crop bounds while previewing the image.
ImagesAspect Ratio Fitter
Fit an image into a target aspect ratio by cropping it or extending the canvas.
ImagesImage Rotator & Flipper
Correct an image orientation or create a mirrored copy.
ImagesGrayscale Image
Convert a color image to grayscale.
ImagesImage Opacity
Adjust the opacity of an entire image and export it with transparency.
ImagesRounded Image Corners
Give an image consistent rounded corners and transparent outer corners.
ImagesImage Tone Adjuster
Adjust brightness, contrast, and hue while preserving image transparency.
ImagesAdd Text to Image
Place one readable text layer on an image with font, color, position, and stroke controls.
ImagesMake Color Transparent
Remove a chosen color from an image with tolerance and soft feathering.
ImagesPhoto Collage Maker
Arrange 2 to 9 photos into a clean collage with layout, spacing, corners, and background controls.
Video & GIFImages to GIF Maker
Turn an ordered set of still images into a looping GIF.
Video & GIFGIF Speed Changer
Speed up or slow down a GIF while preserving its frames and dimensions.
Video & GIFVideo Trimmer
Keep the part of a video between selected start and end times.
Video & GIFVideo Rotator
Rotate a sideways or incorrectly oriented video.
AudioAudio Trimmer
Keep one continuous segment from an audio file and export it as a new file.
PDF & DocumentsMerge PDFs
Combine multiple PDF files in a chosen order.
PDF & DocumentsSplit PDF
Export selected pages from one PDF or split it into multiple files by rule.
PDF & DocumentsRotate PDF Pages
Correct the orientation of PDF pages and export a new file.
PDF & DocumentsReorder PDF Pages
Enter a complete page order, validate it, and export the rearranged PDF.
PDF & DocumentsWatermark PDF
Add a consistent text watermark to selected pages of a PDF.
PDF & DocumentsAdd PDF Page Numbers
Add sequential page numbers to a PDF and export it.
PDF & DocumentsImages to PDF
Arrange one or more images in order as a single PDF.
PDF & DocumentsPDF to Images
Render PDF pages as shareable or reusable images.
PDF & DocumentsExtract PDF Text
Extract copyable plain text from an existing PDF text layer.
Text & SocialText Case Converter
Convert text to a natural-language case or programming naming convention.
Text & SocialText Diff
Compare two text blocks and locate additions, removals, and changes.
Data & DeveloperData Encoder & Decoder
Convert between raw text or files and Base64, Hex, HTML entity, URL percent, or Data URI representations.
Data & DeveloperUUID v4 Generator
Generate random UUID v4 values locally in batches and copy or export them.
Data & DeveloperHash Calculator
Calculate digests for text or files to compare their integrity.
Data & DeveloperJSON Formatter & Viewer
Format hard-to-read JSON and inspect it in a collapsible tree.
Data & DeveloperJSON Validator
Check whether JSON is valid and locate every syntax error.
Data & DeveloperJSON Minifier
Remove unnecessary whitespace from JSON to reduce its text size.
Data & DeveloperJWT Decoder
Decode a JWT locally to inspect its header, payload, and time fields.
Data & DeveloperURL Parser
Break a URL into its scheme, host, port, path, query parameters, and fragment.
Security & PrivacyMetadata Viewer
Inspect hidden capture, location, device, and technical metadata in local files.
Security & PrivacyPassword Generator
Generate a strong random password locally according to a website rule set.
Design & CreativeSVG Line Maker
Create a smooth reusable decorative curve from a small set of control points.
Design & CreativeImage Color Picker
Pick an exact color from a pixel or small area of a local image and save useful swatches.
Design & CreativeColor Converter
Enter one color and view or copy its equivalent values in common color spaces.
Design & CreativeColor Mixer
Mix two colors at a defined ratio to produce a copyable intermediate color.
Design & CreativeSignature Maker
Draw a signature with a finger, stylus, or mouse and export it with a transparent background.
Design & CreativeIcon Maker
Create a PNG icon at a chosen size from one image or a short piece of text.
Math & ScienceBasic Calculator
Complete everyday arithmetic with a direct expression input.
Math & ScienceFraction Calculator
Calculate fraction arithmetic and see the reduced answer and key steps.
Math & SciencePercentage Calculator
Solve common percentage, proportion, change, and reverse-base questions.
Math & ScienceArea Calculator
Choose a common plane shape and calculate its area from its dimensions.
Math & ScienceRatio Calculator
Simplify ratios, compare two ratios, or solve one missing proportional term.
Math & ScienceCircle Calculator
Calculate all circle parameters from one known radius, diameter, circumference, or area.
Math & ScienceDensity Calculator
Enter two of mass, volume, and density to calculate the third.
Math & ScienceSpeed, Distance & Pace
Enter two of distance, time, speed, or pace to calculate the remaining values.
Date & TimeTimestamp Converter
Convert both ways between Unix seconds or milliseconds and readable date-times.
Date & TimeAge Calculator
Calculate exact age, elapsed days, and the interval to the next birthday from a birth date.
Date & TimeTime Duration Calculator
Calculate the duration between two times or add and subtract day, hour, minute, and second values.
FinanceFixed-payment Loan
Estimate payments, total interest, fees, and amortization for a fixed-rate installment loan, or solve for one loan variable.
FinanceCompound Growth
Estimate how an initial balance and recurring contributions grow at a given return and compounding frequency.
FinanceSalary Converter
Convert pre-tax pay among hourly, daily, weekly, monthly, and annual frequencies.
Health & FitnessMacro Calculator
Convert a user-provided daily calorie target and protein, carbohydrate, and fat ratios into grams.
Health & FitnessSleep Time Planner
Show several sleep-duration options from a planned bedtime or wake time.
EverydayUnit Converter
Convert among units of the same dimension for length, mass, temperature, area, volume, speed, time, and data.
EverydayWheel Picker
Enter candidates and use a visual wheel to select one at random.
EverydayRandom Number Generator
Generate one or more integers or decimals within a specified range.
EverydayFuel Economy
Calculate fuel consumption, efficiency, and optional cost per distance from a trip and refill.
EverydayElectricity Cost
Estimate energy use and cost from device power, load, duration, and electricity price.
Data & DeveloperGzip Compressor
Compress text or one file to Gzip, or safely decompress a Gzip file locally.
Data & DeveloperJSON Compare
Compare JSON values with explicit array-order and numeric-tolerance rules.
Data & DeveloperJSON / YAML Converter
Convert a single JSON or YAML document while checking types and duplicate keys.
Math & ScienceLeast Common Multiple
Calculate exact common multiples for 2–20 integers with factorization steps.
Math & ScienceGreatest Common Factor
Calculate the greatest common factor and list all common positive divisors.
Math & ScienceInteger Factorization
List prime factors, all positive divisors, and factor pairs of an integer.
Math & ScienceRoman Numerals
Convert integers from 1 to 3999 and Roman numerals in either direction.
Math & SciencePercent Error
Compare experimental and reference values with absolute or signed relative error.
Math & SciencePoint Distance
Calculate two- or three-dimensional Euclidean distance and coordinate differences.
ImagesImage Blur
Blur an entire still image or one rectangular or circular region.
ImagesImage Sharpener
Adjust sharpening strength, radius and threshold while preserving the image dimensions.
ImagesImage Pixelator
Apply a pixel-block visual effect to the whole image or one rectangular region.
ImagesInvert Image Colors
Invert RGB colors while keeping every alpha value unchanged.
ImagesTransparent Edge Refiner
Refine existing transparent edges with shrink, expand, feather and white-fringe controls.
ImagesPNG Inspector
Inspect PNG dimensions, source bit depth, color type and transparency without editing it.
Math & SciencePermutations and Combinations
Count ordered or unordered selections, with or without repetition.
Math & ScienceQuadratic Solver
Solve real or complex roots with exact expressions and stable approximations.
Math & ScienceMass Calculator
Find mass from positive force and acceleration magnitudes.
Math & ScienceMolarity Calculator
Solve ideal molar concentration, amount of substance or solution volume.
Math & ScienceTriangle Solver
Solve every valid triangle from three known sides or angles, including ambiguous SSA cases.
Math & ScienceVolume Calculator
Calculate solid volume with independent dimension units and exact pi expressions.
Math & ScienceSurface Area
Compute curved, side and base areas with explicit open-face options.
Math & ScienceDescriptive Statistics
Summarize up to 10,000 numbers with explicit sample or population variance.
Math & ScienceSequence Calculator
Generate or identify candidate arithmetic, geometric and Fibonacci-style recurrences.
AudioAudio Joiner
Join 2–20 audio files in order into one M4A file, with local resampling.
AudioAudio Format Converter
Convert full MP3, WAV or M4A audio into a different WAV or M4A format.
EverydayDice Roller
Roll common or custom dice with individual results and an integer modifier.
EverydayName Match
A stable, meaningless score for two names. For entertainment only; names are never saved.
PDF & DocumentsProtect PDF
Set an opening password with standard AES-256 encryption and verify a new local copy.
PDF & DocumentsUnlock PDF
Use a known password and authorization to create a verified unencrypted copy.
Math & ScienceGPA Calculator
Calculate term and cumulative GPA with an editable grade mapping.
Math & ScienceGrade Calculator
Calculate weighted grades and the score needed to reach a target.
Date & TimeDate Calculator
Find calendar and workday intervals, or add and subtract dates.
Date & TimeWeekday Finder
Find the weekday, day of year and same date in nearby years.
Video & GIFGIF Player
Inspect GIF frames, timing and loops with read-only playback controls.
Video & GIFGIF Canvas Fitter
Fit a GIF to a target canvas while retaining frame timing and loops.
Math & ScienceResistor Color Code
Read resistance, tolerance and temperature coefficient from four, five or six bands.
Math & ScienceEquivalent Resistance
Calculate pure series or parallel resistance with a unit for each resistor.
Math & ScienceOhm's Law
Solve voltage, current, resistance and power from consistent DC inputs.
Data & DeveloperQR Code Generator
Create a locally verified QR code from text or structured information.
Data & DeveloperBarcode Generator
Generate verified Code 128, EAN-13 and UPC-A images with check digits.
Data & DeveloperBinary Inspector
Inspect local bytes, jump to offsets and search large files without editing.
Math & ScienceScientific Calculator
Evaluate expressions with trigonometry, logarithms, powers and roots.
Math & ScienceProgrammer Calculator
Calculate exact integers across binary, decimal and hexadecimal with explicit word limits.
Math & ScienceHalf-life Calculator
Solve ideal exponential decay for an amount, time or half-life.
Math & ScienceSlope Calculator
Find exact line equations from two points or a point and slope.
Math & ScienceLong Division
Divide finite decimals with exact remainders and step-by-step working.
Math & ScienceSample Size Calculator
Estimate a simple random sample for a proportion with optional finite population correction.
Math & ScienceProbability Calculator
Calculate complements, unions and intersections under an explicit event relationship.
Math & ScienceZ-score Calculator
Solve for a raw value, mean, standard deviation or Z score.
Math & ScienceConfidence Interval
Calculate one-sample mean or proportion intervals with explicit methods and assumptions.
Math & SciencePlanetary Weight
Compare gravitational weight across Solar System bodies using versioned reference constants.
Math & ScienceMolecular Weight
Parse chemical formulas and calculate molar mass, element counts and mass fractions.
Date & TimeTime Zone Converter
Convert a local date and time across IANA zones with explicit daylight-saving choices.
Date & TimeTime Card Calculator
Summarize weekly shifts, breaks and custom overtime, with an optional gross-pay estimate.
Date & TimeStopwatch
Time an activity, record laps and restore the active session locally.
Date & TimeCountdown Timer
Set a duration, pause or resume, and choose an optional local reminder.
FinanceRent Affordability
Compare income-ratio and cash-flow limits for a monthly rent scenario.
FinanceAuto Loan
Estimate vehicle financing, trade-in equity, manual tax and total purchase costs.
FinanceRefinance Comparison
Compare fixed-loan payments, costs, payoff balances and break-even months.
FinanceAverage Return
Compare arithmetic, geometric, cumulative and annualized returns.
FinanceGDP Calculator
Sum expenditure or income components with a consistent data basis.
FinanceDebt Payoff
Compare fixed monthly debt plans with same-month payment rollover.
EverydayTile Quantity
Combine areas and deductions, then round tiles and whole boxes.
EverydayMulch Volume
Estimate volume and whole bags for multiple garden shapes.
EverydayRoofing Materials
Estimate sloped areas and packages from rectangular horizontal projections.
EverydayTire Size Comparison
Compare nominal geometry, rotations and speedometer examples.
EverydayDew Point
Estimate dew point or relative humidity within a stated Magnus range.
EverydayApparent Temperature
Estimate wind chill or heat index within the model domain.
EverydayQuarter-Mile Horsepower Estimate
Estimate empirical horsepower from an existing closed-course timing slip.
EverydayStair Geometry Draft
Calculate straight-run dimensions from a fixed riser count for discussion.
FinanceInflation Purchasing Power
Compare U.S. purchasing power using a frozen official CPI-U snapshot.
FinanceCollege Cost Scenario
Estimate yearly tuition, living costs, funding and uncovered costs.
FinanceAnnuity Values
Solve fixed annuity values with explicit payment timing and cash-flow signs.
Health & FitnessBody Surface Area
Compare adult surface-area estimates from height and weight.
FinanceHouse Affordability
Explore housing budgets with debt, down payment, tax and loan assumptions.
FinanceRetirement Projection
Compare savings, retirement spending and gaps under explicit assumptions.
FinanceU.S. Social Security Estimate
Compare claiming ages using annual earnings and a dated SSA rule snapshot.
Design & CreativeCloud SVG Maker
Shape a cloud with custom colors and export transparent SVG or PNG.
Design & CreativeColor Palette Generator
Generate color harmonies with locked swatches, seeds and contrast references.
Video & GIFVideo Cropper
Crop local H.264 video to a fixed rectangle or aspect ratio while retaining AAC audio.
Video & GIFFrame Extractor
Extract original-size PNG, JPEG or WebP frames from local video or GIF, individually or in a ZIP.
Video & GIFVideo to GIF
Turn a short local MP4 or MOV clip into a GIF with custom frame rate, width and looping.
Video & GIFAnimation to Video
Convert a local GIF to MP4 with finite looping, an opaque background and original frame timing.
Video & GIFAnimated Image Converter
Convert GIF, animated WebP and APNG when timing, colors and transparency can be preserved exactly.
Video & GIFVideo Compressor
Compress a local H.264 video, compare a short sample and save the complete MP4 with its AAC audio.
Video & GIFLive Photo Maker
Turn a short video or a photo and video into a Live Photo, preview it and save to Photos.
AudioAudio Splitter
Split MP3, WAV or M4A without re-encoding; save numbered segments or a ZIP and retry unfinished parts.
AudioTone Generator
Play sine, square or triangle test tones with a silent start and automatic stop.
AudioVoice Recorder
Record, pause and continue locally, then preview and save an M4A recording.
AudioVideo to MP3
Extract a local video’s complete audio track, then preview and save an MP3.
Health & FitnessBMI Calculator
Calculate adult BMI or child BMI-for-age with CDC reference curves, locally.
Health & FitnessDaily Energy Needs
Estimate adult resting and daily energy with three formulas and five activity assumptions.
Health & FitnessBody Composition
Estimate body fat from circumferences or convert a known percentage to fat and lean mass.
Health & FitnessHeight-based Weight Range
Convert BMI reference endpoints to weight for a height, with optional historical equations.
Health & FitnessPregnancy Dates
Estimate pregnancy dates from a period, conception, supplied due date or IVF transfer.
Health & FitnessPregnancy Weight Gain
View versioned pregnancy weight-gain guidance and approximate weekly chart bands.
Health & FitnessChild Height Estimate
Explore a rough adult-height range with clear method and age limits.
Health & FitnessCalories Burned
Estimate activity energy from a versioned MET, weight and duration.
Health & FitnessCycle Prediction
Explore rough calendar ranges from completed cycle lengths, with clear limits.
Health & FitnessBody Shape Ratios
Compare geometric circumference ratios with optional source descriptions.
Health & FitnessGolf Handicap
Estimate a nonofficial index from 3–20 rounds using a WHS 2024 snapshot.
Health & FitnessBAC Estimate
Explore uncertain alcohol scenarios with emergency guidance; never for driving decisions.
EverydayScreen Ruler
Calibrate against a physical reference, then measure between movable markers.
EverydayShoe Size Reference
Look up neighboring or matching shoe-size references from versioned foot-length tables.
Text & SocialSocial Post Checker
Check a private draft against versioned platform length rules and review estimates.
Text & SocialCross-platform Thread Splitter
Split and number a draft while preserving words, links, emoji and original whitespace.
Text & SocialChat Mockup Generator
Create a fictional conversation PNG with local chat styles and permanent mockup labels.
Text & SocialSocial Post Mockup
Preview fictional Instagram or Threads posts with image fit and permanent mockup marks.
Text & SocialSocial Profile Mockup
Arrange a fictional profile and three-column image grid with permanent mockup marks.
Security & PrivacyImage Redactor
Cover selected image regions locally, remove metadata and review every view before saving.
Design & CreativeRandom Placeholder Image Generator
Create reproducible abstract test images with dimensions, colors and a seed.
Design & CreativeClay Emoji Maker
Combine a head, eyes and mouth, adjust color and rotation, and export transparent SVG or PNG.
Design & CreativeProfile Picture Safe Area
Adjust a local image inside a generic circular preview and export a square avatar PNG.
Design & CreativeICO & PNG Converter
Extract ICO layers into a PNG ZIP or create a four-size ICO from one PNG.
Design & CreativeFavicon Generator
Create browser ICO and PNG favicons with HTML references in a local ZIP.
Design & CreativeDecorative Background Generator
Create waves, fluid, grain and isometric backgrounds with repeatable seeds and local export.
Design & CreativeSVG Freehand Drawing
Draw on a fixed transparent canvas, erase strokes, undo and export SVG or PNG.
Design & CreativeICO Layer Editor
Replace, remove or add icon layers while preserving untouched encoding, then save a new ICO.
Design & CreativeApp Icon Set Generator
Generate an iOS AppIcon or Android launcher ZIP with safe-area previews and a checked file list.
Design & CreativeSVG Optimizer
Optimize static SVG locally and verify visual differences before saving.
Design & CreativeFont Format Converter
Convert licensed static TTF or OTF fonts to WOFF or WOFF2 and verify the rendered result locally.
PDF & DocumentsOverlay PDFs
Overlay matching PDF pages with cover opacity, layer order and a checked preview.
PDF & DocumentsCompress PDF
Reduce PDF image sizes while retaining text and vectors, then compare pages and actual savings.
PDF & DocumentsLocal Document & Ebook Reader
Read, search and resume local PDF, EPUB, DOCX, TXT or Markdown documents.
Security & PrivacyCertificate Inspector
Inspect local PEM/DER certificate fields, dates, fingerprints and chain structure.
Security & PrivacyLocal Symmetric Encryptor
Encrypt text or one file with a password and authenticate encrypted packages locally.
Security & PrivacyBrowser Fingerprint Audit
Inspect local signals exposed by BangBang’s embedded WebKit and compare repeated checks.
PDF & DocumentsDocument OCR
Recognize printed text from images and scanned PDFs locally, then review and save TXT.
Security & PrivacyMetadata Remover
Remove selected private metadata from local images and videos, verify each copy, then save.
Security & PrivacyImage Metadata Editor
Edit common JPEG/TIFF metadata locally, review every change, and save a verified copy.
Data & DeveloperQR & Barcode Scanner
Read codes from your camera or images, review their original content, and copy safely.
PDF & DocumentsSign PDF
Place a handwritten or transparent PNG signature on PDF pages, confirm each position, and save a separate copy.
PDF & DocumentsCompare PDFs
Compare PDF text and page images locally, review differences and unavailable pages, and save a report.
PDF & DocumentsAnnotate PDF
Add text, highlights, pen strokes and notes, review the generated PDF, and save a separate copy.