效率指南
统计字数、估算阅读时间、生成二维码，每天节省时间。
Best Free AI Tools for Students: A Practical Guide
AI can draft, explain, quiz and organise — but only if you stay in charge. A practical, hype-free guide to the free AI tools that genuinely help students.
How to Create a QR Code for Free
From CVs to café menus, QR codes connect paper to the web. Generate a crisp PNG in seconds and learn the design rules that keep it scannable.
10 Practical Ways to Save Time With Free Online Tools
Small chores eat hours every month. Here are ten specific, practical ways to hand them to free browser tools — with links to each tool.
How to Calculate Reading Time for an Article
A 5-minute read label is a promise to the reader. Learn the simple math behind reading time, which speed to assume, and how to calculate it accurately.
How to Count Words and Characters Online
Essay limits, meta descriptions, ad copy — every format has a number attached. Paste your text into a free counter and hit the target on the first try.