Practical guides for PDF, image, developer, and text workflows — written for UseBoldTools and updated as our utilities evolve.
Newest articles across UseBoldTools.
Developer Tools
GUID and UUID usually describe the same 128-bit identifier. Learn the terminology, UUID v4 format choices, common mistakes, and when to use each term.
By UseBoldTools Team · 7 min read · June 3, 2026
Read guide →
Developer Tools
Generate random UUID v4 GUIDs online with UseBoldTools: choose count, format output, copy values, or download TXT and CSV files from your browser.
By UseBoldTools Team · 7 min read · June 3, 2026
Read guide →
PDF Tools
Understand how browser-based PDF merge works on UseBoldTools, what data leaves your device, and practical steps to merge sensitive documents more safely.
By UseBoldTools Team · 6 min read · June 3, 2026
Read guide →
PDF Tools
Combine multiple PDFs into one file using a clear Upload → Arrange → Merge → Download workflow. Everything runs locally in your browser with pdf-lib.
By UseBoldTools Team · 8 min read · June 3, 2026
Read guide →Merge, convert and edit PDF files
PDF Merge
Understand how browser-based PDF merge works on UseBoldTools, what data leaves your device, and practical steps to merge sensitive documents more safely.
By UseBoldTools Team · 6 min read · June 3, 2026
Read morePDF Merge
Combine multiple PDFs into one file using a clear Upload → Arrange → Merge → Download workflow. Everything runs locally in your browser with pdf-lib.
By UseBoldTools Team · 8 min read · June 3, 2026
Read moreJSON, Base64, GUID, JWT and more
GUID Generator
GUID and UUID usually describe the same 128-bit identifier. Learn the terminology, UUID v4 format choices, common mistakes, and when to use each term.
By UseBoldTools Team · 7 min read · June 3, 2026
Read moreGUID Generator
Generate random UUID v4 GUIDs online with UseBoldTools: choose count, format output, copy values, or download TXT and CSV files from your browser.
By UseBoldTools Team · 7 min read · June 3, 2026
Read more