Tools

4 tools listed

Offline utilities by the OnePass team: everything runs in your browser or on your machine — zero upload, no signup. Click a card button to open the tool in the WorkBuddy App Store, or scan the mini-program code with WeChat to add it to your workspace.

Image Compress & Converter — Scan with WeChat to view details on WorkBuddy

Image Compress & Converter

Compress and convert local images offline in your browser: output PNG, JPG, WebP, AVIF, BMP, GIF, ICO or TIFF — HEIC photos from iPhone / iPad included. Adjustable quality, proportional scaling, batch processing with ZIP export. Nothing is ever uploaded.

CompressConvertHEICBatch
Open in WorkBuddy App Store → Online web version ↗
Excel Converter — Scan with WeChat to view details on WorkBuddy

Excel Converter

Convert local Excel files offline to JSON, CSV, TXT, HTML, Markdown or PDF, split by worksheet or merge multiple files (single file / single sheet). Powered by a local SheetJS + jsPDF engine — no network, no upload.

ExcelConvertPDFSplit & Merge
Open in WorkBuddy App Store → Online web version ↗
Photo EXIF Privacy Cleaner — Scan with WeChat to view details on WorkBuddy

Photo EXIF Privacy Cleaner

Before posting to Moments, Weibo or Xiaohongshu, strip the hidden info in your photos: GPS location, capture time, phone model, author/copyright, embedded thumbnail and vendor data. Lossless rewrite (no re-compression) for JPEG / PNG / WebP / HEIC, read-only inspection, whole-directory batch mode. Nothing leaves your device.

PrivacyEXIFGPSBatch Clean
Open in WorkBuddy App Store → Online web version ↗
JSON to Excel — Scan with WeChat to view details on WorkBuddy

JSON to Excel

Convert local JSON files to .xlsx offline: each object in an array becomes a row, headers are the union of all keys, a single object yields one row, and nested values are serialized as text. Upload a file or paste JSON — everything runs in your browser.

JSONExcelData Convert
Open in WorkBuddy App Store → Online web version ↗

More tools are on the way — stay tuned…

OnePass Toolbox — Free Offline Utilities

This page collects the offline utility tools built by the OnePass (一封传话) team. Every tool runs entirely in your browser or locally on your machine: files are never uploaded to any server, and no account is required. Each card shows the tool's WeChat mini-program code — scan it with WeChat to view details — plus a one-click button that opens the tool's page in the WorkBuddy App Store, where you can add it to your WorkBuddy workspace.

What you can do on this page

  • Browse the toolbox: image compression & format conversion (PNG / JPG / WebP / AVIF / BMP / GIF / ICO / TIFF, HEIC supported), Excel conversion (JSON / CSV / TXT / HTML / Markdown / PDF, split & merge), photo EXIF privacy cleaning (GPS, capture time, phone model, copyright) and JSON-to-Excel conversion.
  • Jump to WorkBuddy in one click: every card's main button opens the tool's WorkBuddy App Store page directly — no search needed.
  • Scan the mini-program code: tap any QR code to open the store page on desktop, or scan it with WeChat on your phone to add the tool to your WorkBuddy workspace.
  • Try the web version: most tools also have a free online version that runs fully in your browser.

All tools share the same design principles: offline-first, zero upload, no registration. New tools are added regularly — the list on this page keeps growing.