BrowserSpaces

Your browser.Your space.Your data.

Privacy-focused apps that run entirely in your tab. No uploads. No accounts. Nothing leaves your device.

BrowserSpaces — private apps in your browser

The promise

A private workspace that never leaves the tab.

Most online utilities ask you to upload files so a server can process them. BrowserSpaces keeps the work on your device.

Where are we?

Your browser.

Open a tab and you are ready. No installers, no account walls.

What is here?

Your space.

Call, share, sign, whiteboard, audit, and chain local tools into workflows.

The promise

Your data.

Files stay on your device. Signaling only introduces peers — never sees content.

Apps

Six spaces. Zero uploads.

Call, share, sign, whiteboard, audit, and workflow — each space runs in your browser.

View all apps →

Six private app spaces arranged around a sealed browser workspace

App

Video Call

Private peer-to-peer video.

Small-group video with screen share and chat. Streams travel browser to browser — not through our servers.

Open Video Call App

File Share

Send files browser to browser.

Encrypted transfers with no upload queue and no size quota — just a short code both sides can verify.

Open File Share App

Workflow

Chain local tools into one run.

Compose PDF, image, and text steps into a private pipeline. Export the recipe and reuse it anytime.

Open Workflow App

E-Sign

Sign and verify PDFs locally.

Draw or upload a signature, place marks on any page, and verify an on-device attestation — the PDF never leaves your machine.

Open E-Sign App

Whiteboard

Diagram and brainstorm together.

Infinite canvas with templates and live peer sync. Boards move between browsers — not into a cloud vault.

Open Whiteboard App

SEO Audit

Score on-page structure locally.

Paste HTML, upload a saved page, or fetch a URL. Checks run in your tab with exportable reports.

Open SEO Audit

Security

Privacy & security kit.

Passwords, hashes, AES, TOTP, tracker cleaning, permissions — processed locally.

View security tools →

Local security toolkit with lock, keys, and sealed vault motifs

Password generator

Strong passwords & passphrases.

Generate random passwords or memorable passphrases with crypto.getRandomValues — entirely in your tab.

Password strength

zxcvbn estimate, offline.

Estimate password strength with zxcvbn — crack-time hints without sending the password anywhere.

Hash calculator

MD5, SHA-1, SHA-256, and more.

Hash text or files with MD5 and Web Crypto SHA digests. Useful for checksums and fingerprints.

AES encrypt / decrypt

AES-GCM with a passphrase.

Encrypt or decrypt text with AES-GCM. Key derived via PBKDF2 from your passphrase — all in Web Crypto.

TOTP authenticator

Generate & verify 2FA codes.

Generate time-based one-time passwords from a base32 secret, or verify a code — standard 30s TOTP.

URL tracker cleaner

Strip tracking query params.

Remove common tracking parameters (utm_*, fbclid, gclid, and more) from a URL before you share it.

PDF

Private PDF tools.

Merge, split, compress, watermark, redact, OCR, and more — all in your browser.

View PDF tools →

PDF Workspace

Reorder, rotate, and merge in one place.

Load one or more PDFs, rearrange pages visually, rotate or drop pages, then export a single file.

Edit PDF

Add text and shapes on pages.

Overlay text, highlights, and simple shapes onto PDF pages — then download the annotated file.

Merge PDFs

Combine multiple PDFs into one.

Stack PDFs in any order into a single downloadable file. Processed locally.

Split PDF

Extract pages or cut into parts.

Split every page into its own PDF, cut by range, or extract selected pages.

Compress PDF

Shrink file size in your browser.

Re-encode pages at a chosen quality to reduce size while keeping the document usable.

PDF to Image

Export every page as an image.

Render each page to PNG or JPEG at a chosen scale and download the images.

Image

Private image tools.

Convert, compress, resize, remove backgrounds, OCR, and more — all in your browser.

View Image tools →

Image Workspace

Edit, resize, and convert in one place.

Load images, resize, convert formats, and download results from a single private workspace.

Image Convert

PNG, JPEG, WebP, and more.

Convert images between common formats entirely in your browser. No upload, no install.

Compress Image

Shrink file size with quality presets.

Reduce JPEG, PNG, and WebP sizes with Smaller, Balanced, or High quality presets.

Resize Image

Scale by pixels or percent.

Resize images by exact dimensions or percentage while optionally locking aspect ratio.

Image Upscale

Enlarge at 2×, 3×, or 4×.

Upscale images locally with multi-pass high-quality resampling — no cloud GPU required.

Remove Background

Cut out subjects locally.

Remove image backgrounds in your browser with an on-device model. Files never upload.

Media

Media studio + convert.

Trim, compress, convert, and GIF with FFmpeg.wasm in your browser — files stay in your tab.

View media tools →

Private media studio with video player, trim, and convert tool tiles

Media workspace

Trim, convert, export in one place.

Load a video or audio file, trim a region, pick an export format, and download — powered by FFmpeg.wasm in your browser.

Media convert

Change video or audio format.

Convert between common containers (MP4, WebM, MKV) and extract audio to MP3, WAV, or AAC — all with FFmpeg.wasm.

Media trim

Cut a clip by start and end.

Trim video or audio to a time range using FFmpeg -ss / -to. Preview times in the UI, encode locally.

Media compress

Smaller files with CRF & scale.

Reduce video size with CRF quality, veryfast preset, and optional max width — practical for sharing.

Video to GIF

Short paletted GIFs.

Turn a short video segment into an animated GIF with palette generation for better colors. Soft max duration in the UI.

Mute video

Strip the audio track.

Remove audio from a video while keeping the picture — useful for silent shares and overlays.

Audio

Private audio tools.

Convert, trim, compress, denoise, and transcribe — all in your browser.

View Audio tools →

Audio Workspace

Trim, denoise, and convert in one place.

Load a clip, trim a region, apply light denoise, pick an export format, and download — all in your browser.

Audio Converter

MP3 and WAV — local re-encode.

Re-encode audio to WAV or MP3 entirely in your browser. Video files work too — only the audio track is used.

Audio Trimmer

Cut clips with a waveform editor.

Select a region on the waveform, keep or cut it out, preview, then export — privately in this tab.

Audio Compressor

Reduce bitrate and shrink file size.

Lower sample rate and MP3 bitrate to shrink audio for sharing — processed entirely locally.

Noise Reducer

Suppress steady background noise.

Reduce hiss, hum, and HVAC-style noise with EQ filters, light compression, and an amplitude gate — fully in your browser.

Pitch & Speed

Change tempo and pitch.

Speed up, slow down, or shift pitch of a clip locally, then export MP3 or WAV.

Text

Private text tools.

Clean, convert case, count words, edit Markdown and CSV, summarize, and more — all in your browser.

View Text tools →

Text Workspace

Edit, clean, and convert in one place.

Paste or load text, clean it, change case, and export — a private workspace for everyday editing.

Text Cleaner

Strip spaces, HTML, URLs, and noise.

Paste messy text, choose what to strip, and copy a clean result — all in your browser.

Case Converter

UPPERCASE, camelCase, slugs, and more.

Convert text to any common case or developer format with a live preview. Nothing is uploaded.

Word Counter & Readability

Counts, reading time, and readability.

Count words and characters, estimate reading time, score readability, and list keyword frequency — privately.

Markdown Editor

Markdown ↔ HTML with live preview.

Write or paste Markdown, preview it live, and convert between Markdown and HTML. Nothing is uploaded.

Find & Replace

Search, regex, and replace with preview.

Find, replace, and run regex on text with live match counts. Your text never leaves the device.

Private local AI.

Chat, transcribe, and draft with models that run in your browser — prompts stay on your device.

View AI tools →

Private local AI workspace with neural nodes and sealed chat tiles

Local AI Chat

Chat with local LLMs in your browser.

Load a small language model into this tab and chat privately. Nothing you type is sent to BrowserSpaces servers.

Speech to Text

Whisper transcription, fully local.

Transcribe audio or video files with Whisper in your browser. Export plain text or subtitles — nothing is uploaded.

AI Content Writer

Draft articles with a local model.

Turn a topic and outline into a draft using the same on-device models as Local AI — no cloud writing API.

Calculators

Private calculators.

Percentages, loans, BMI, units, statistics, scientific math, and more — all in your browser.

View calculators →

Private calculator workspace with pad, chart, and currency tool tiles

Developer

Private developer tools.

Base64, JSON, JWT, hashes, regex, diffs, QR codes, and more — all in your browser.

View Dev tools →

Private developer workspace with terminal, braces, and API tool tiles