SubTrends

Averages 6 posts/day, top 25% activity. Most active Tuesdays around 10 PM UTC. Mostly text posts (66%).

Posts / Day Average posts per day this month. Arrow is change vs the prior calendar month.
6 8%
Avg Upvotes Mean net upvotes per post this month (upvotes minus downvotes). Arrow is change vs the prior month.
2 13%
Avg Comments Mean number of comments per post this month. Arrow is change vs the prior month when that month’s data is available.
5 42%
Activity Rank #20,466 by posts/day among 92,652 tracked SFW subreddits as of Jul 2026 (Top 25%). Arrow is spots gained or lost vs the prior month.
#20,466 767
Top 25%
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.
37%
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.
44%

r/pdf Traffic & Engagement

Volume and engagement over time

Posts/DayAvg Upvotes0510150246Jul 1Jul 8Jul 15Jul 22Jul 29
Posts/Day Avg Upvotes Mean net upvotes per post in this bucket.

Post Format

Top Post Type Text
Typical Title Length Medium (57 chars)
Peak Day Saturday

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
95%
10–99
5%
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. 38%
Median upvoted post Median upvotes among posts that received upvotes. Differs from Avg Upvotes in the snapshot, which includes every post. 3
Top post Highest upvote count on a single post this month. 26

r/pdf Most Active Times

Peak posting by day and hour (UTC)

Sun
Mon
Tue
Wed
Thu
Fri
Sat
12 AM
1 AM
2 AM
3 AM
4 AM
5 AM
6 AM
7 AM
8 AM
9 AM
10 AM
11 AM
12 PM
1 PM
2 PM
3 PM
4 PM
5 PM
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10 PM
11 PM
← Swipe →
#1 Top 3 activity windows

Most Active by Day

Sun 10 AM
Mon 10 AM
Tue 10 PM
Wed 5 PM
Thu 8 AM
Fri 7 AM
Sat 6 AM

r/pdf Flair Performance

Upvotes and volume by flair

Flair Posts Upvotes
Software (Tools)103 (52.3%)2
Question80 (40.6%)2
Tutorial + Guide8 (4.1%)2
Warning6 (3.0%)2

Post Type Breakdown

Share by text, image, or link

66%text posts

r/pdf Trending Keywords

Ranked by how often they appear

KeywordMentions ▼UpvotesComments
pdf
116 (58.9%)
25
free
29 (14.7%)
27
built
20 (10.2%)
23
pdfs
19 (9.6%)
34
tool
18 (9.1%)
26
browser
15 (7.6%)
21
editor
14 (7.1%)
28
text
13 (6.6%)
26
reader
13 (6.6%)
45
tools
11 (5.6%)
26

r/pdf Mentioned Domains

Most linked sites

This community doesn't link off-site.

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

r/pdf Top Posts

Highest-performing posts

r/pdf Audience Overlap

Overlapping audiences

r/pdf FAQ

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

Based on posting volume, r/pdf is most active on Tuesdays around 10 PM UTC. That window has the most community activity, but busier hours also mean more competition for attention.

How active is r/pdf?

r/pdf averages 6 posts per day and ranks in the top 25% for activity among tracked SFW subreddits.

How many upvotes do posts on r/pdf get?

Posts on r/pdf average about 2 upvotes this month (net score per post).

What kind of posts does r/pdf get most?

On r/pdf, most posts are text posts (66%)