What’s the best free keyword research tool recommended on Reddit?

General
1

I’m trying to grow a small blog and keep seeing people say Reddit has great advice on free SEO tools, especially for keyword research. I’ve tried a few basic options like Google Keyword Planner, but I’m not sure which free tools are actually the most accurate and useful for finding low-competition keywords. Can anyone share the best free keyword research tools that Reddit users really trust, and why they work well for you?

2

Short answer from lots of Reddit lurking and testing stuff on my own blog:

If you want one “best free tool” Reddit people shout about most, it’s usually:

  1. Google Search Console for real queries
  2. Keywords Everywhere (paid now) used to be #1, so the current “free darlings” are:
    • Keyword Surfer
    • AlsoAsked
    • AnswerThePublic alternatives like AlsoAsked / SEO Minion

But for a single top pick for free keyword research that Reddit still loves:
Ahrefs Free Keyword Generator + Google Search Console combo.

Here is what I’d do step by step.

  1. Start with Google Search Console

    • Go to Performance → Search results
    • Filter last 28 or 90 days
    • Sort by Impressions
    • Look for queries where:
      • Impressions are high
      • Average position is between 10 and 25
    • Those are “low hanging” keywords.
    • Create new posts or improve existing ones around those exact queries.
      Reddit users who share case studies often show that GSC mined keywords drive most of their easy wins.

  2. Use Ahrefs Free Keyword Generator

    • Plug in your main topic or seed keyword
    • Set your country
    • Export the 100 results you get
    • Sort by Keyword Difficulty from low to high
    • Filter by words that match your blog niche and experience
    • Target KD 0–10 with at least 50–200 search volume when your blog is small.
      This mirrors what a lot of “I grew from 0 to 50k” Reddit posts do.

  3. Use Keyword Surfer (Chrome extension)

    • Search your topic in Google
    • Keyword Surfer shows volume and related keywords in the sidebar
    • Copy the phrases that:
      • Have some volume
      • Match the “People also ask” questions you see
    • Blend those into your content as subheadings and FAQs.
      Reddit likes Keyword Surfer because it is simple and lives right in search results.

  4. Use AlsoAsked for topic clusters

    • Type one main keyword
    • Export the People Also Ask tree
    • Use each node as a section or separate post idea
    • Group similar questions into one post instead of spamming thin posts.
      This helps cover a topic fully, which threads on r/SEO keep pushing.

  5. Quick free stack a lot of Redditors recommend

    • GSC for real queries you already show for
    • Ahrefs Free Keyword Generator for new topics
    • Keyword Surfer for quick checks right in SERPs
    • AlsoAsked for question-based content and structure

Stuff you tried:
Google Keyword Planner is built for ads, not content.
It lumps similar keywords together and often hides true volume for low search terms, which most small blogs rely on.

If you want to stay 100 percent free and pick only one starting point, pick Google Search Console.
If you want a “Reddit-approved” research workflow, pair GSC with Ahrefs Free Keyword Generator and Keyword Surfer.

3

If you’re looking for one “best free keyword research tool” that Reddit tends to gravitate to, I’d actually say: there isn’t one, and anyone saying there is is oversimplifying it.

@chasseurdetoiles already covered the GSC + Ahrefs Free combo really well, so I’ll skip repeating that workflow. Instead, here’s what I actually see Redditors use vs what they just name drop.

1. Most underrated “tool”: the SERP itself
Reddit threads talk about tools non‑stop, but the quieter advice that usually works best:

  • Type your topic into Google
  • Look at:
    • Autocomplete
    • People Also Ask
    • “Related searches” at the bottom
  • Then check the top 3–5 ranking pages:
    • What subheadings do they all share?
    • What questions do they all answer?
    • What angles are missing that you can actually cover better?

This is insanely effective for a small blog and doesn’t depend on any volume number at all. A lot of “0 to 10k visits” posts basically did glorified SERP stalking rather than fancy tool magic.

2. Ubersuggest free tier
Reddit is split on this. Some hate it, some quietly use the free version.

Pros:

  • Gives basic volume and keyword ideas
  • Shows some low‑competition stuff for smaller sites
    Cons:
  • Data is often off
  • Naggy about upgrading

If you treat the numbers as directional instead of absolute truth, it’s solid enough to ideate topics.

3. Lowfruits & similar “weak competitor” tools (mostly freemium)
Not talked about as loudly as Ahrefs, but you’ll see it mentioned in longer case study posts.

What it’s good for:

  • Finds keywords where the top results have weak domains or forums
  • Perfect when your blog is tiny and can’t compete with big brands yet

You get some free credits, but not unlimited, so it’s more like “periodically free.”

4. Reddit itself as a keyword source
Slightly ironic, but also legit:

  • Go to subreddits related to your niche
  • Sort by “Top” and “This year” or “All time”
  • Look for:
    • Questions that get repeated
    • Posts with tons of comments where people are confused or arguing
  • Turn those into long, specific posts like:
    • “How to X without Y”
    • “X vs Y for [specific use case]”
    • “Why your X keeps failing and what to do instead”

These long‑tail “real language” queries rarely show well in traditional tools, but Google still sends traffic to them.

5. Where I disagree a bit with the typical Reddit take

  • People obsess over keyword difficulty metrics. For a small blog, I’d care more about:
    • Search intent
    • Whether you can create much better content than what’s ranking
    • Whether the SERP is full of forums/Q&A or giant brands
  • I’d trust live SERPs more than any third‑party KD score. A KD 20 keyword with 3 forum results is often easier than a KD 0 keyword with 10 huge brands clogging page 1.

If I had to pick one free thing to lean on heavily:

  • Google Search Console is the best data
  • The actual Google SERP is the best research tool
    Everything else like Ahrefs Free, Keyword Surfer, Ubersuggest, etc is just supporting cast.

So if you’re stuck:

  1. Use SERPs + Reddit threads for ideas.
  2. Publish.
  3. Use GSC to see what queries you’re actually showing up for.
  4. Expand and refine based on that, instead of chasing “perfect” tools.

And yeah, Google Keyword Planner is kinda trash for small blogs. It’s built to sell ads, not help you find weird long‑tail stuff that actually ranks.

4

Short version: Reddit doesn’t actually crown a single “best free keyword research tool.” It’s more like a toolbox, and you pull out different things for different jobs.

Since @chasseurdetoiles already hit GSC + Ahrefs Free + SERP pretty hard, here are other angles Reddit folks quietly lean on.

1. Chrome extensions that do 80% of the job

Reddit mentions a few of these constantly, even if people don’t admit they rely on them:

Keyword Surfer / similar browser add‑ons

Pros:

  • Volumes right in the Google results
  • Instant related keyword ideas while you browse
  • Great for “is this even searched at all?” sanity checks

Cons:

  • Volume accuracy is meh, especially in tiny niches
  • Can clutter the page and slow the browser
  • Encourages chasing numbers instead of user intent

Used right, it is more like a reality check than a “decide everything by this metric” tool.

2. Free topical research > classic keyword tools

Reddit’s case studies that actually succeed usually spend more time understanding a topic than hunting a perfect phrase.

Two underrated options:

Answer‑style tools (e.g. “questions people ask” visualizers)
You plug in a core term and get a tree of questions.

Pros:

  • Amazing for building full topical clusters
  • Great to structure long, thorough posts
  • Surfaces “how / why / which / vs” queries that classic tools underreport

Cons:

  • Free tiers are limited
  • Can lead to bloated posts if you try to answer everything at once

Entity / topic graph tools
These show related entities instead of just keyword strings.

Pros:

  • Helps you write like an expert rather than keyword stuffer
  • Good for making sure your post hits all the core concepts

Cons:

  • More abstract, not great if you only care about search volume
  • Learning curve if you are new to SEO concepts

For a small blog, this “topic first, keyword second” approach scales better than obsessing over 10 different tools.

3. Using competitive pages without expensive suites

You can borrow a trick from paid tools without paying:

  1. Search your main idea.
  2. Open the top 5 pages.
  3. Run them through any free “keyword density / page analyzer” tool.
  4. Export or copy their recurring phrases and questions.

You are not copying; you are reverse engineering what Google already trusts.

Pros:

  • No need for a full Ahrefs / Semrush subscription
  • Great shortcut to find subtopics you might miss

Cons:

  • Easy to end up derivative if you just mimic them
  • Does not show keyword difficulty, so you must manually judge SERP strength

Here I slightly disagree with some Reddit advice: I think basic difficulty metrics are not useless. They are just rough filters. Use them to avoid obviously brutal terms, not to micro‑optimize.

4. Turning actual user language into keywords

Instead of using Reddit only as “idea mining” like @chasseurdetoiles described, you can get more systematic:

  1. Grab 10 to 20 threads in your niche from Reddit, Quora, and niche forums.

  2. Paste them into a free word/phrase frequency tool.

  3. Collect recurring phrases like “for beginners,” “on a budget,” “without X,” “alternative to Y.”

  4. Combine them with your core topics for long‑tails:

    • “[topic] for beginners on a budget”
    • “best [tool] alternative to [big brand]”
    • “how to [result] without [common obstacle]”

This often beats traditional keyword tools for micro‑niches where volumes are low but intent is strong.

5. How to think about “best” if you must pick one

If you insist on choosing a single “best free keyword research tool” because time is tight, I would personally prioritize like this:

  1. A data source tied to your own site (GSC)
  2. The live SERP itself
  3. A lightweight volume / suggestion helper (extension or web tool)
  4. A question / topic visualizer tool

You can rotate between them instead of hunting a mythical all‑in‑one.

Compared to @chasseurdetoiles, I am slightly more bullish on using at least one volume‑guessing tool early on, just to avoid writing 30 articles on things literally no one searches. Still, the point stands: none of these tools is “the truth.” They are rough maps.

Final thought: for a small blog trying to grow, your stack can realistically be:

  • 1 browser extension for volumes and suggestions
  • 1 “questions” visualizer for topic clusters
  • GSC once you have traffic
  • Reddit / forums for the real language and pain points

That mix outperforms chasing a single magic free tool, and keeps you focused on actually publishing instead of constantly researching.