Javascript: read djvu online
Use library: minidjvu.js And BlobBuilder.js here. HMTL: Online demo
Month: January 2019
Javascript: BlobBuilder polyfill
The BlobBuilder interface provides an easy way to construct Blob objects. Just create a BlobBuilder and append chunks of data to it by calling the…
How to config fonts for Xpdf tools Linux
Xpdf is a free and open-source PDF viewer for operating systems supported by the Qt toolkit. Website: xpdfreader.com Step 1: make folder fonts eg: /root/xpdf-tools-linux-4.00/fonts…
How to fix error: WebSocket is already in CLOSING or CLOSED state
Some errors you can see: Example 1: Example 2: Example 3: How to fix this error? Server: if you use nodejs If you use socket.io,…
How to install memcached on Ubuntu
We use Ubuntu 16.04.5 LTS 64bits Result: Done! Check:
How to use Amazon Lightsail Linux with Putty and Bitvise Tunnelier
After create VPS, you will see info: Convert your private key See: How to use AWS EC2 Linux with Putty and Bitvise Tunnelier Starting a…
How to batch convert png photos to jpg or vice versa
Example: you have an folder /root/fff7860c7319fa20c8340eb813637fba-i/ with many photos like this figure: And you want to convert all pagepng-*.png files to jpg format. How to…
How to install calibre ebook on CentOS
calibre is a powerful and easy to use e-book manager. Users say it’s outstanding and a must-have. It’ll allow you to do nearly everything and…
CentOS: how to fix error: Encoding file `eu1enc.def’ not found
Here is an example: How to fix this error? Install package texlive-euenc Result: Done! You can install more Result:
How to install pandoc on CentOS
Pandoc is a universal document converter Home page: http://pandoc.org/ Step 1: Download releases here: https://github.com/jgm/pandoc/releases Step 2: Step 3: Step 4: install xelatex (in package:…