Help
Learn how to search UsefulShelf, use tools, process data, and perform common operations.
Find a tool by task
Search the tool library for tasks such as image compression or CSV to JSON, or browse development, image, PDF and text categories. Related tools on each page help you take the next step.
Check the workflow with a sample
Before entering real data, read the example input and expected result. Round-trip encodings where appropriate and open exported files to check dimensions, page counts and contents. A success message is not an output review.
Which operations need the network
Ordinary local tools need no login. Translation sends source text, weather queries locations, exchange rates query currency codes and IP intelligence queries an address. AI generation uploads prompts and selected reference images. OCR downloads recognition resources and processes the image locally.
Saving and downloading
Tasks, schedules, timer state and some preferences stay in this browser without automatic synchronization. Export important data for backup. If a download fails, inspect browser permissions and page errors, keep the original file and retry.
Report a reproducible issue
Include the tool URL, browser version, steps and a minimal sample without private data. Do not send valid tokens, keys, full identity details or private files belonging to others.