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Tool categoryMedia & images22Text & writing9Developer4Documents & office11Education & study4Design & colour4

Browse all 61 tools54 ready · 7 in build

Video, images and audio.

Screenshot BeautifierGive screenshots a background, add arrows and numbered steps, and cover private details in a flattened export.
Subtitle EditorEdit SRT and VTT timings, preview styled captions and burn them into a short video.
Photo WatermarkAdd text or a logo to a batch of photos.
YouTube Thumbnail DownloaderEvery thumbnail size YouTube generates, up to 1280×720 HD, plus its auto-captured frames.
Video Frame ExtractorFrame-accurate stills from MP4, WebM and MOV files at true native resolution.
YouTube Frame by FrameStep through any YouTube video one frame at a time, including on mobile, where YouTube has no shortcuts.
YouTube ScreenshotCapture a clean still from a playing video.
Image ConverterPNG, JPG, WebP and AVIF, converted by the same codecs your browser uses to show them.
Background RemoverCut the background off a photo in your own tab, at full resolution.
Object RemoverPaint over something in a photo and it goes, with the background rebuilt behind it.
Text Behind ImagePut a word behind the person in a photo, so they stand in front of it.
Image CompressorWatch the file get smaller and the picture stay the same, side by side, before you save anything.
Image ResizerDrag a crop box on the picture, or type an exact size, and watch the real result beside it.
AI Image UpscalerUpscale images 2× or 4× locally, then inspect the result at 100% before you save.
GIF MakerMake GIFs from videos, photos or existing GIFs.
Audio Loudness NormaliserMeasure LUFS and true peak, match recordings to a target, then save a batch with a before-and-after report.
Video TrimmerTrim a video in your browser with exact start and end points, a live preview and a local WebM or supported MP4 export.
Video Compressor / ConverterMake a video smaller or convert it to MP4, WebM, MOV or MKV.
Extract Audio from VideoKeep the original audio track or make an MP3 or WAV from a video.
Audio TrimmerCut a section out of a track on a real waveform, and copy an MP3 out frame by frame instead of re-encoding it.
Audio Noise RemoverTake the hiss, hum, traffic and room echo off a voice recording, with a speech model that runs on your own machine.
Silence RemoverFind speech instead of guessing at a noise level, then shorten or remove the pauses you can see.

Count it, convert it, compare it, clean it up.

AI Paraphrasing ToolRewrite English text with local AI, compare changes and check the details before you copy.
Text to SpeechTurn English text into a natural AI voice on your device, then listen or download WAV or MP3.
Audio to TextTranscribe a recording or a video into text with timestamps.
Speech to TextDictate into an editable transcript with a local Whisper model.
Word & Character CounterWords, characters, sentences, paragraphs and reading time, counted as you type.
Case ConverterFifteen cases, from UPPER and Title Case to camelCase and snake_case.
NotepadA quiet place to write without signing up.
Difference CheckerCompare text, code and document wording.
Lorem Ipsum GeneratorPlaceholder copy by the word, sentence, paragraph or character, in classic Latin or plain English.

1 more in build

The everyday encode / decode / validate jobs, with the reassurance that a pasted token or key never left the tab.

JSON Formatter & ValidatorPretty-print, minify, validate and explore a JSON payload as a collapsible tree.
Hash GeneratorGenerate MD5, SHA-256 and four more checksums.
UUID GeneratorVersion 4, 7, 1, 5 and nil identifiers, one or ten thousand at a time, from your own browser.
QR Code GeneratorLinks, Wi-Fi, contacts and more, drawn in your own tab and saved as PNG or SVG.

2 more in build

Documents & office

PDFs and spreadsheets, handled locally.

Resume BuilderBuild a clear resume with a live page preview.
Batch File RenamerRename up to 500 files with ordered rules, a live name-by-name preview and one-off edits.
File TransferSend a file straight from one device to another, across any network.
Merge PDFEvery page from every file on one canvas.
Split PDFCut a PDF into separate files, or pull out the pages you need.
PDF to ImagesChoose your pages, preview the detail, and save PNG or JPG images in one download.
Searchable PDFRead a scanned PDF, check uncertain words against each page, then save a searchable copy without uploading it.
Sign PDFDraw, type or upload a signature and put it on the page.
Images to PDFPhotos or scans into one PDF, at full resolution.
Image to TextRead the words out of a photo, a screenshot or a scan, with the engine running in this tab.
CSV to JSON ConverterConvert either way, with the delimiter detected, a preview table, and quoted fields handled properly.

Education & study

Calculators, converters and study aids that load instantly and work offline.

Typing PracticeA typing speed test that says where the speed went: a heatmap of your keys, a breakdown by finger, and a replay of the run.
Flashcard MakerPaste a list to build a deck, study it with spaced repetition, and print it double-sided.
Unit ConverterConvert 436 units across 60 categories by typing a command or browsing the catalogue.
Pomodoro TimerFocus and break intervals that stay accurate in a background tab, with the finish time on screen.

2 more in build

Design & colour

Colour maths, contrast checking and palettes, in the place you are already working.

Email Signature GeneratorCreate a clickable HTML signature or a team batch from CSV.
CSS Gradient GeneratorLinear, radial and conic gradients with per-stop control.
Colour ConverterConvert HEX, RGB, HSL, OKLCH and more.
Contrast CheckerCheck WCAG 2.2 colour ratios, preview text and copy AA, AAA and UI pass levels.

2 more in build

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Follow the ideas we have chosen to build. Open a card to read the discussion and dated progress notes.

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Considering ideas are open for discussion on the ideas page. They join this board when the work is planned. Live ideas link to an available tool.

A free library of tools that run entirely in your own browser. There is no server that stores your files. No sign-up required. Signed-in typed or pasted work and settings save privately. Text opened from files stays on this device.

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