PDF7 min
How to Reduce PDF File Size Without Ruining Quality
Learn why PDFs become large, what takes the most space and what to check after compression in real-world workflows.
19.09.2026Read guide
ToolNova knowledge center
Do more than convert files — understand the workflow.
This section explains the practical decisions behind PDF, image, video and audio workflows: when a format makes sense, where quality loss comes from and what to verify after conversion.
12 original guidesPrepared by Mert BİLGİN
PDF8 min
How to Turn a Scanned PDF into Editable Text with OCR
If text cannot be selected in a PDF, the document may have no text layer at all. Learn the correct OCR workflow and verification steps.
19.09.2026Read guide
Image8 min
JPG vs PNG vs WebP: Which Image Format Should You Choose?
JPG is common for photos, PNG for transparent graphics and WebP for web delivery, but the best choice depends on the content and destination.
19.09.2026Read guide
Image6 min
What Is HEIC and When Should You Convert It to JPG?
HEIC is an efficient photo format. Conversion to JPG is usually about wider compatibility rather than improving image quality.
19.09.2026Read guide
Image6 min
What Happens to PNG Transparency When You Convert to JPG?
JPG does not support transparency. Transparent PNG areas must therefore be flattened onto a background color during conversion.
19.09.2026Read guide
Image7 min
Image Resizing vs Image Compression: What Is the Difference?
1920×1080 pixels and 2 MB measure different things. One describes image dimensions; the other describes storage size.
19.09.2026Read guide
Video7 min
MP4 vs WebM: Which Video Format Should You Choose?
MP4 is known for broad device support, while WebM is strong for web delivery. The codec inside the container matters as much as the extension.
19.09.2026Read guide
Audio7 min
WAV vs MP3: Audio Quality or Smaller File Size?
WAV is often preferred for editing and source preservation, while MP3 is convenient for compact sharing. The right choice depends on the workflow.
19.09.2026Read guide
Video6 min
How to Extract Audio from a Video and Save It as MP3
Creating MP3 from video means discarding the picture and converting or re-encoding the audio stream. Output quality should match the source and purpose.
19.09.2026Read guide
PDF7 min
Does Merging PDFs Reduce Quality? A Practical Guide
Merging does not necessarily mean recompressing everything. Pages are often collected into a new PDF, but the result should still be verified.
19.09.2026Read guide
PDF7 min
Protecting and Unlocking PDFs: What to Know for Safer Document Sharing
A PDF password can add a useful access barrier, but encryption alone does not solve every document-security problem. Sharing and password handling matter too.
19.09.2026Read guide
Image8 min
Image OCR: 10 Practical Ways to Improve Text Recognition
Many OCR errors begin with a poor source image. Better cropping, straight perspective and the right language can make a substantial difference.
19.09.2026Read guide
How are these guides prepared?
The guides are built around real ToolNova workflows, technical file-format behavior and the checks users should make after conversion. When tool behavior changes, we aim to update the related guidance as well.
See our testing approach