diff --git a/src/components/post-thread-modal/index.js b/src/components/post-thread-modal/index.js
index b89fbe1..4e97961 100644
--- a/src/components/post-thread-modal/index.js
+++ b/src/components/post-thread-modal/index.js
@@ -7,12 +7,14 @@ import { Modal, Spinner } from 'react-bootstrap'
 
 import MemoDb from '../../services/memo-db'
 import PostThreadNode from './post-thread-node'
+import { collectThreadAddrs, loadThreadProfiles } from './thread-profiles'
 import './post-thread-modal.css'
 
 function PostThreadModal ({ show, txid, onHide }) {
   const [loading, setLoading] = useState(false)
   const [error, setError] = useState(null)
   const [thread, setThread] = useState(null)
+  const [profiles, setProfiles] = useState({})
 
   useEffect(() => {
     if (!show || !txid) {
@@ -25,12 +27,24 @@ function PostThreadModal ({ show, txid, onHide }) {
       setLoading(true)
       setError(null)
       setThread(null)
+      setProfiles({})
 
       try {
         const memoDb = new MemoDb()
         const data = await memoDb.getPostThread(txid)
-        if (!cancelled) {
-          setThread(data.post || null)
+        const post = data.post || null
+
+        if (cancelled) return
+
+        if (post) {
+          const addrs = collectThreadAddrs(post)
+          const profileMap = await loadThreadProfiles(addrs, memoDb)
+          if (!cancelled) {
+            setThread(post)
+            setProfiles(profileMap)
+          }
+        } else if (!cancelled) {
+          setThread(null)
         }
       } catch (err) {
         if (!cancelled) {
@@ -53,6 +67,7 @@ function PostThreadModal ({ show, txid, onHide }) {
 
   const handleHide = () => {
     setThread(null)
+    setProfiles({})
     setError(null)
     onHide()
   }
@@ -76,7 +91,7 @@ function PostThreadModal ({ show, txid, onHide }) {
         )}
 
         {!loading && !error && thread && (
-          <PostThreadNode post={thread} isRoot />
+          <PostThreadNode post={thread} profiles={profiles} isRoot />
         )}
       </Modal.Body>
     </Modal>
diff --git a/src/components/post-thread-modal/post-thread-avatar.js b/src/components/post-thread-modal/post-thread-avatar.js
new file mode 100644
index 0000000..871c331
--- /dev/null
+++ b/src/components/post-thread-modal/post-thread-avatar.js
@@ -0,0 +1,35 @@
+/*
+  Small avatar for post thread nodes (profile pic or jdenticon fallback).
+*/
+
+import React, { useState, useEffect } from 'react'
+import Jdenticon from '@chris.troutner/react-jdenticon'
+
+function PostThreadAvatar ({ addr, profilePicUrl, size = 36 }) {
+  const [picError, setPicError] = useState(false)
+
+  useEffect(() => {
+    setPicError(false)
+  }, [profilePicUrl, addr])
+
+  if (profilePicUrl && !picError) {
+    return (
+      <img
+        src={profilePicUrl}
+        alt=''
+        className='post-thread-avatar'
+        width={size}
+        height={size}
+        onError={() => setPicError(true)}
+      />
+    )
+  }
+
+  return (
+    <div className='post-thread-avatar post-thread-avatar-jdenticon' style={{ width: size, height: size }}>
+      <Jdenticon size={String(size)} value={addr} />
+    </div>
+  )
+}
+
+export default PostThreadAvatar
diff --git a/src/components/post-thread-modal/post-thread-modal.css b/src/components/post-thread-modal/post-thread-modal.css
index 75139fc..af22921 100644
--- a/src/components/post-thread-modal/post-thread-modal.css
+++ b/src/components/post-thread-modal/post-thread-modal.css
@@ -22,24 +22,59 @@
 }
 
 .post-thread-node-header {
-  font-size: 0.85rem;
+  display: flex;
+  align-items: center;
+  gap: 0.6rem;
   margin-bottom: 0.5rem;
 }
 
+.post-thread-avatar {
+  flex-shrink: 0;
+  border-radius: 4px;
+  object-fit: cover;
+  display: block;
+}
+
+.post-thread-avatar-jdenticon {
+  overflow: hidden;
+  border-radius: 4px;
+}
+
+.post-thread-node-meta {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: baseline;
+  gap: 0.35rem;
+  font-size: 0.85rem;
+  color: #6c757d;
+  min-width: 0;
+}
+
 .post-thread-node-author {
-  font-family: monospace;
-  font-size: 0.8rem;
+  font-weight: 600;
+  color: #212529;
   text-decoration: none;
 }
 
 .post-thread-node-author:hover {
   text-decoration: underline;
+  color: #28a745;
+}
+
+.post-thread-node-author-address {
+  font-family: monospace;
+  font-size: 0.8rem;
+  font-weight: 500;
 }
 
 .post-thread-node-replied {
   font-style: italic;
 }
 
+.post-thread-node-seen {
+  white-space: nowrap;
+}
+
 .post-thread-node-text {
   white-space: pre-wrap;
   word-break: break-word;
diff --git a/src/components/post-thread-modal/post-thread-node.js b/src/components/post-thread-modal/post-thread-node.js
index 1d3b440..e569a53 100644
--- a/src/components/post-thread-modal/post-thread-node.js
+++ b/src/components/post-thread-modal/post-thread-node.js
@@ -5,10 +5,30 @@
 import React from 'react'
 import { Link } from 'react-router-dom'
 
-function formatSeen (seen) {
+import PostThreadAvatar from './post-thread-avatar'
+
+function formatRelativeSeen (seen) {
   if (!seen) return ''
   const ms = seen > 1e12 ? seen : seen * 1000
-  return new Date(ms).toLocaleString()
+  const diff = Date.now() - ms
+  const seconds = Math.floor(diff / 1000)
+
+  if (seconds < 60) return 'just now'
+
+  const minutes = Math.floor(seconds / 60)
+  if (minutes < 60) return `${minutes}m`
+
+  const hours = Math.floor(minutes / 60)
+  if (hours < 24) return `${hours}h`
+
+  const days = Math.floor(hours / 24)
+  if (days < 30) return `${days}d`
+
+  const months = Math.floor(days / 30)
+  if (months < 12) return `${months}mo`
+
+  const years = Math.floor(months / 12)
+  return `${years}y`
 }
 
 function truncateAddr (addr, maxLen = 20) {
@@ -17,29 +37,52 @@ function truncateAddr (addr, maxLen = 20) {
   return `${addr.slice(0, half)}...${addr.slice(-half)}`
 }
 
-function PostThreadNode ({ post, depth = 0, isRoot = false }) {
+function getDisplayName (addr, profiles) {
+  const profile = profiles?.[addr]
+  if (profile?.name) {
+    return profile.name
+  }
+  return truncateAddr(addr, 24)
+}
+
+function PostThreadNode ({ post, profiles = {}, depth = 0, isRoot = false }) {
   if (!post) return null
 
+  const profile = profiles[post.addr] || {}
+  const displayName = getDisplayName(post.addr, profiles)
+  const hasCustomName = Boolean(profile.name)
+
   return (
     <div
       className={`post-thread-node${isRoot ? ' post-thread-node-root' : ''}`}
       style={{ marginLeft: depth > 0 ? `${Math.min(depth, 8) * 1.25}rem` : undefined }}
     >
       <div className='post-thread-node-inner'>
-        <div className='post-thread-node-header text-muted'>
-          <Link
-            to={`/profile/${encodeURIComponent(post.addr)}`}
-            className='post-thread-node-author'
-            title={post.addr}
-          >
-            {truncateAddr(post.addr, 24)}
-          </Link>
-          {!isRoot && <span className='post-thread-node-replied ms-1'>replied</span>}
-          <span className='post-thread-node-seen ms-2'>{formatSeen(post.seen)}</span>
+        <div className='post-thread-node-header'>
+          <PostThreadAvatar
+            addr={post.addr}
+            profilePicUrl={profile.profilePicUrl}
+          />
+          <div className='post-thread-node-meta'>
+            <Link
+              to={`/profile/${encodeURIComponent(post.addr)}`}
+              className={`post-thread-node-author${hasCustomName ? '' : ' post-thread-node-author-address'}`}
+              title={post.addr}
+            >
+              {displayName}
+            </Link>
+            {!isRoot && <span className='post-thread-node-replied'>replied</span>}
+            <span className='post-thread-node-seen'>{formatRelativeSeen(post.seen)}</span>
+          </div>
         </div>
         <div className='post-thread-node-text'>{post.text}</div>
         {(post.replies || []).map((reply) => (
-          <PostThreadNode key={reply.txid} post={reply} depth={depth + 1} />
+          <PostThreadNode
+            key={reply.txid}
+            post={reply}
+            profiles={profiles}
+            depth={depth + 1}
+          />
         ))}
       </div>
     </div>
diff --git a/src/components/post-thread-modal/thread-profiles.js b/src/components/post-thread-modal/thread-profiles.js
new file mode 100644
index 0000000..a2e9ec3
--- /dev/null
+++ b/src/components/post-thread-modal/thread-profiles.js
@@ -0,0 +1,36 @@
+/*
+  Helpers for loading display names and avatars for thread participants.
+*/
+
+export function collectThreadAddrs (post) {
+  const addrs = new Set()
+
+  function walk (node) {
+    if (!node?.addr) return
+    addrs.add(node.addr)
+    for (const reply of node.replies || []) {
+      walk(reply)
+    }
+  }
+
+  walk(post)
+  return [...addrs]
+}
+
+export async function loadThreadProfiles (addrs, memoDb) {
+  const profiles = {}
+
+  await Promise.all(addrs.map(async (addr) => {
+    const [nameRecord, profilePic] = await Promise.all([
+      memoDb.getName(addr),
+      memoDb.getProfilePic(addr)
+    ])
+
+    profiles[addr] = {
+      name: nameRecord?.name || null,
+      profilePicUrl: profilePic?.url || null
+    }
+  }))
+
+  return profiles
+}
diff --git a/src/services/memo-db.js b/src/services/memo-db.js
index 251ed0f..fea9537 100644
--- a/src/services/memo-db.js
+++ b/src/services/memo-db.js
@@ -66,6 +66,21 @@ class MemoDb {
     }
   }
 
+  async getName (addr) {
+    try {
+      const result = await this.axios.get(
+        `${config.backend}/level/name/${encodeURIComponent(addr)}`
+      )
+      return result.data
+    } catch (err) {
+      if (err.response && err.response.status === 404) {
+        return null
+      }
+      console.error('Error in getName()')
+      throw err
+    }
+  }
+
   async getPostsByAddr (addr, { limit = 100, offset = 0 } = {}) {
     try {
       const result = await this.axios.get(