SubTrends
Other

Averages 18 posts/day, top 10% activity. Most active Wednesdays around 4 PM UTC. Mostly image posts.

Posts / Day Average posts per day this month. Arrow is change vs the prior calendar month.
18 54%
Avg Upvotes Mean net upvotes per post this month (upvotes minus downvotes). Arrow is change vs the prior month.
1 6%
Avg Comments Mean number of comments per post this month. Arrow is change vs the prior month when that month’s data is available.
1 18%
Activity Rank #8,541 by posts/day among 90,883 tracked SFW subreddits as of Sep 2026 (Top 10%). Arrow is spots gained or lost vs the prior month.
#8,541 4,428
Top 10%
Posts w/ Links The percentage of posts that link off-site. This counts true link posts plus text posts with a URL in the body. Image and video posts are not counted.
28%
Low-Reply Rate Share of posts with 0 or 1 comment. A single comment is often an automated mod reply rather than real community discussion.
89%

r/pdfbooks Traffic & Engagement

Volume and engagement over time

Posts/DayAvg Upvotes020406000.511.5Sep 1Sep 8Sep 15Sep 22Sep 29
Posts/Day Avg Upvotes Mean net upvotes per post in this bucket.

Post Format

Top Post Type Image
Typical Title Length Medium (70 chars)
Peak Day Tuesday

Upvote Distribution

How upvoted posts perform Only posts with 2+ upvotes. The bands below show how those posts are spread by upvote count.

2–9
100%
10–99
0%
100–999
0%
1K+
0%
Posts that get upvoted Share of posts that received at least one upvote (2+ net upvotes). Most posts at 1 upvote are excluded. 3%
Median upvoted post Median upvotes among posts that received upvotes. Differs from Avg Upvotes in the snapshot, which includes every post. 2
Top post Highest upvote count on a single post this month. 3

r/pdfbooks Most Active Times

Peak posting by day and hour (UTC)

Sun
Mon
Tue
Wed
Thu
Fri
Sat
12 AM
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1 PM
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11 PM
← Swipe →
#1 Top 3 activity windows

Most Active by Day

Sun 4 PM
Mon 5 PM
Tue 8 AM
Wed 1 AM
Thu 7 AM
Fri 12 PM
Sat 1 PM

r/pdfbooks Flair Performance

Upvotes and volume by flair

Flair Posts Upvotes
Request :downvote:306 (81.0%)1
General :snoo_dealwithit:33 (8.7%)1
Discussion :snoo_putback:25 (6.6%)1
Publish :upvote:14 (3.7%)1

Post Type Breakdown

Share by text, image, or link

42%image posts

r/pdfbooks Trending Keywords

Ranked by how often they appear

KeywordMentions ▼UpvotesComments
requested
150 (28.6%)
11
published
148 (28.2%)
11
tanbat
147 (28.0%)
11
pdf
129 (24.6%)
11
book
100 (19.1%)
11
edition
87 (16.6%)
11
anonymous
73 (13.9%)
11
help
50 (9.5%)
11
anyone
38 (7.2%)
11
looking
36 (6.9%)
11

r/pdfbooks Mentioned Domains

Most linked sites

This community doesn't link off-site.

Its posts are text, images, or discussion rather than outbound links.

r/pdfbooks Top Posts

Highest-performing posts

r/pdfbooks Audience Overlap

Overlapping audiences

r/pdfbooks FAQ

What's the best time to post on r/pdfbooks?

Based on posting volume, r/pdfbooks is most active on Wednesdays around 4 PM UTC. That window has the most community activity, but busier hours also mean more competition for attention.

How active is r/pdfbooks?

r/pdfbooks averages 18 posts per day and ranks in the top 10% for activity among tracked SFW subreddits.

How many upvotes do posts on r/pdfbooks get?

Posts on r/pdfbooks average about 1 upvotes this month (net score per post).

What kind of posts does r/pdfbooks get most?

On r/pdfbooks, posts are a mix of formats, mostly image posts